Sorry, I'm not clear as to what's wrong ...
Are you having endurance issues or overall performance issues or something more specific?
I just started an Fire/Earth myself for this weekend, but so far only have him to 18. So far he has been doing pretty well. Not as smooth as my Mind/Psi did, but a bit quicker kills (This was before /Psi was adjusted)
I am currious what level you are at now, and if mainly solo or teamed.
A few things I would say on your build from my persective:
Tremor is not that great imo. Slow, not much Aoe damage, and not great Mitigation. Of course, if you are teaming mostly, some Aoe is better then none, as long as you do not grab aggro.
Pretty much same thing for Fire cages, although there can be an argument made for Firecages when you have Flashfires slotted up. Cages stops any knockdown of your attacks, so in a way it can negate some of your control from your secondary. But, on the other side, it does keep everyone together for Hot Feet. Which brings me to my next point.
Hot Feet has been excellent for me so far. The damage per end is actually fairly decent vs one mob, and great as an AoE. It also gives a fair amount of protection with the fear effect. I am eagerly waiting stacking this and Mud Pots for some decent activation free damage. Of course, it is fairly end intensive. But by turning off when not needed, and between rest and Domination, it has not been an issue. Of course, having Domination up more helps which brings me to...
Hasten. You really should fit it in sooner. Even if you do not care about using it for your attack chain, it brings up Domination quicker, along with your longer recharge AoE controls. Of course, it does help your attack chain since you can almost stop using Stone Spears and rely on Char and Stone Mallet for most of your chain. BTW, slotting Char for damage early on is not a bad idea. It is comparable w/ Stone Mallet for DPA.
As far as synergy, here is where I see the synergy. A melee based AOE Machine w/ Hotfeet, Mudpots and Fissure. Also, I think the build could be decent vs AVs when permaed. You have a quick activating Hold, Powerboost to help add some Mag durration if you miss, a second Hold in Seismic Smash to slip in between Chars and activation Free damage w/ Hotfeet/Mud Pots running. Not sure if it will work in game as well as it does on paper though. I know my Mind/Psi could hold AVs, but it was tough to maintain. It was easier to use sleeps when the triangles were up. But, it is definately a possiblity unlike most other builds.
I was trying to make a Farming build, though I doubt it'll be as good as a Fire/Psy was or maybe still is? I just wanted to try something diffrent and I liked the Idea of Hot Feet and Mud Pots stacking for slow and dmg (although the mudpots 8'radius is really weak for the amount of damage and end it takes to do.) So as a farming build what can I do to improve. I have his melee and S/L def around 25 or so which is too low I would think.
Fire/EA I have found so far to be a hard line to thread between end, slotting, power picks, and overall synergy. Did I pick the wrong primary? Here is what I have so far:
Villain Plan by Mids' Villain Designer 1.601
http://www.cohplanner.com/
Click this DataLink to open the build!
Level 50 Magic Dominator
Primary Power Set: Fire Control
Secondary Power Set: Earth Assault
Power Pool: Flight
Power Pool: Fitness
Power Pool: Fighting
Power Pool: Speed
Ancillary Pool: Soul Mastery
Villain Profile:
Level 1: Char -- UbrkCons-Acc/Rchg(A), UbrkCons-Hold(42), UbrkCons-Hold/Rchg(46), UbrkCons-Acc/Hold/Rchg(46), UbrkCons-EndRdx/Hold(46)
Level 1: Stone Spears -- Thundr-Acc/Dmg(A), Thundr-Acc/Dmg/Rchg(17)
Level 2: Stone Mallet -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx(3), KntkC'bat-Dmg/Rchg(3), KntkC'bat-Dmg/EndRdx/Rchg(9)
Level 4: Tremor -- Oblit-%Dam(A), Oblit-Acc/Dmg/EndRdx/Rchg(5), Oblit-Dmg(5), Oblit-Acc/Rchg(7), Oblit-Dmg/Rchg(7), Oblit-Acc/Dmg/Rchg(9)
Level 6: Fly -- Empty(A)
Level 8: Swift -- Empty(A)
Level 10: Fire Cages -- Enf'dOp-Acc/Immob(A), Enf'dOp-Acc/Immob/Rchg(11), Enf'dOp-Acc/Rchg(11), Enf'dOp-EndRdx/Immob(48), Enf'dOp-Acc/EndRdx(50), Enf'dOp-Immob/Rng(50)
Level 12: Flashfire -- RzDz-Acc/Rchg(A), RzDz-EndRdx/Stun(13), RzDz-Acc/EndRdx(13), RzDz-Stun/Rng(43), RzDz-Immob%(43)
Level 14: Health -- Numna-Regen/Rcvry+(A), Numna-Heal(15), Numna-Heal/EndRdx(15)
Level 16: Power Boost -- RechRdx-I(A), RechRdx-I(17)
Level 18: Cinders -- NrncSD-Acc/Rchg(A), NrncSD-EndRdx/Hold(19), NrncSD-Acc/EndRdx(19), NrncSD-Hold/Rng(37), NrncSD-Acc/Hold/Rchg(40), NrncSD-Dam%(43)
Level 20: Stamina -- P'Shift-End%(A), P'Shift-EndMod(21), P'Shift-EndMod/Acc(21), P'Shift-EndMod/Rchg(34)
Level 22: Hot Feet -- M'Strk-Acc/Dmg(A), M'Strk-Dmg/EndRdx(23), M'Strk-Dmg/Rchg(23), M'Strk-Acc/EndRdx(25), M'Strk-Acc/Dmg/EndRdx(25), M'Strk-Dmg/EndRdx/Rchg(27)
Level 24: Boxing -- Empty(A)
Level 26: Tough -- S'fstPrt-ResDam/Def+(A), HO:Ribo(27)
Level 28: Seismic Smash -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx(29), KntkC'bat-Dmg/Rchg(29), KntkC'bat-Dmg/EndRdx/Rchg(31)
Level 30: Weave -- LkGmblr-Rchg+(A), LkGmblr-Def/EndRdx(31), LkGmblr-Def/EndRdx/Rchg(31)
Level 32: Fire Imps -- C'Arms-Acc/Rchg(A), C'Arms-Acc/Dmg(33), C'Arms-Dmg/EndRdx(33), C'Arms-Acc/Dmg/Rchg(33), C'Arms-EndRdx/Dmg/Rchg(34), C'Arms-+Def(Pets)(34)
Level 35: Mud Pots -- M'Strk-Acc/Dmg(A), M'Strk-Dmg/Rchg(36), M'Strk-Dmg/EndRdx(36), M'Strk-Acc/EndRdx(36), M'Strk-Acc/Dmg/EndRdx(37), M'Strk-Dmg/EndRdx/Rchg(37)
Level 38: Fissure -- Ragnrk-Dmg(A), Ragnrk-Dmg/Rchg(39), Ragnrk-Acc/Dmg/Rchg(39), Ragnrk-Acc/Rchg(39), Ragnrk-Dmg/EndRdx(40), FrcFbk-Rechg%(40)
Level 41: Dark Embrace -- HO:Ribo(A), HO:Ribo(42), HO:Ribo(42)
Level 44: Soul Drain -- AdjTgt-ToHit(A), AdjTgt-ToHit/Rchg(45), AdjTgt-Rchg(45), AdjTgt-ToHit/EndRdx/Rchg(45)
Level 47: Dark Obliteration -- DarkWD-ToHitDeb(A), DarkWD-ToHitDeb/Rchg(48), DarkWD-ToHitdeb/Rchg/EndRdx(48)
Level 49: Hasten -- RechRdx-I(A), RechRdx-I(50)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Domination