No slotting, but here's how I'd do it. I assumed you have the Ninja pack for Ninja Run. By using this power you instead of Super Speed you can buy yourself an extra power pick, and on Illusion Control the invisibility aura from SS isn't missed.
The main thing to notice here is that I delayed Cauterize until later and took the shields early. That's because, in my experience with low levels, most of the damage isn't directed at a single person so much as the whole team, and you're better off reducing how fast it's incoming and hitting the whole group with Warmth than trying to target individuals.
Depending on how much you solo, you may want to drop something for Air Superiority and spec out of it later.
Hero Plan by Mids' Hero Designer 1.601
http://www.cohplanner.com/
Click this DataLink to open the build!
Level 37 Magic Controller
Primary Power Set: Illusion Control
Secondary Power Set: Thermal Radiation
Power Pool: Speed
Power Pool: Fitness
Hero Profile:
Level 1: Blind -- (A)
Level 1: Warmth -- (A)
Level 2: Deceive -- (A)
Level 4: Spectral Wounds -- (A)
Level 6: Thermal Shield -- (A)
Level 8: Hasten -- (A)
Level 10: Plasma Shield -- (A)
Level 12: Group Invisibility -- (A)
Level 14: Hurdle -- (A)
Level 16: Health -- (A)
Level 18: Phantom Army -- (A)
Level 20: Stamina -- (A)
Level 22: Cauterize -- (A)
Level 24: Flash -- (A)
Level 26: Spectral Terror -- (A)
Level 28: Forge -- (A)
Level 30: Thaw -- (A)
Level 32: Phantasm -- (A)
Level 35: Heat Exhaustion -- (A)
Level 38: Melt Armor -- (A)
Level 41: [Empty]
Level 44: [Empty]
Level 47: [Empty]
Level 49: [Empty]
------------
Level 1: Brawl -- (A)
Level 1: Sprint -- (A)
Level 2: Rest -- (A)
Level 1: Containment
Ok thanks alot 
Probably making small changes but this one gives me the diea i was looking for 
Once you hit 26, having PA and Spectral Terror, you should be a control monster on your teams. Being ill, you are a team person. Or I am.
Soon you'll get Phantasm, the creepiest and smartest pet around.
[I don't know much about therm, but ill is insane.]
Here's a fractured build I found of mine.
I got some convenience items, Recall Friend, etc, early. I don't pick up a travel because with Hurdle and Ninja Run I'm jumping 40something mph as soon as I get to the DOs.
Oh, and I'm ill/storm, so just ingore the storm [which also rocks]. And ignore my lowbie frankenslotting. She's 35 now, this is mostly to get math right.
Read Local's guide to ill, or others. Know your ASAP powers.
Hero Plan by Mids' Hero Designer 1.601
http://www.cohplanner.com/
Candyjet: Level 48 Science Controller
Primary Power Set: Illusion Control
Secondary Power Set: Storm Summoning
Power Pool: Speed
Power Pool: Fitness
Power Pool: Teleportation
Ancillary Pool: Fire Mastery
Hero Profile:
------------
Level 1: Spectral Wounds Entrpc-Acc/Dmg:21(A), Entrpc-Dmg/EndRdx:23(3), Volly-Acc/Dmg:26(3), Volly-Dmg/EndRdx:28(5), Empty(5), Ruin-Acc/EndRdx/Rchg:31(7)
Level 1: Gale Acc(A)
Level 2: Blind Entrpc-Acc/Dmg:21(A), Entrpc-Dmg/EndRdx:23(7), Volly-Acc/Dmg:30(9), Volly-Dmg/EndRdx:28(9), Mael'Fry-Dmg/EndRdx/Rchg:33(11), Ruin-Acc/EndRdx/Rchg:31(11)
Level 4: Snow Storm Slow(A)
Level 6: Hasten RechRdx-I:30(A), Empty(13), Empty(13)
Level 8: Hurdle Jump-I:35(A)
Level 10: Recall Friend Empty(A)
Level 12: Superior Invisibility Empty(A), Empty(15), Empty(15), DefBuff(27)
Level 14: Health Heal-I:30(A), Heal-I:30(17), Heal-I:30(17)
Level 16: Freezing Rain Empty(A), LdyGrey-%Dam:21(25), Empty(29), Empty(31), EndRdx(31), Dmg(31)
Level 18: Phantom Army Empty(A), Empty(19), Empty(19), Empty(21), Empty(21), Empty(23)
Level 20: Stamina Empty(A), Empty(23), Empty(25)
Level 22: Hurricane Empty(A)
Level 24: Deceive Conf-I:30(A)
Level 26: Spectral Terror Acc(A), Range-I:35(27), Empty(29)
Level 28: Thunder Clap Acc(A)
Level 30: O2 Boost Heal(A)
Level 32: Phantasm RechRdx(A)
Level 35: Tornado Empty(A)
Level 38: Lightning Storm Empty(A)
Level 41: Fire Ball Empty(A)
Level 44: Rise of the Phoenix Empty(A)
Level 47: Consume Empty(A)
Level 49: Fire Blast Empty(A)
------------
Level 1: Brawl Empty(A)
Level 1: Sprint Run-I:35(A)
Level 2: Rest Empty(A)
Level 1: Containment
Geez, what a mess.
And, for the critics later, I Want RotP. I have self destruct and there essentially is no debt in this game.
Hi all
I've been thriving on making an ill/therm as my newest toons and I've been checking out skill selection etc (I don't have mid's, since I 'm on a mac so I'm using suckerpunch)
But the low levels (till lvl 24-28) are a headache for skillselection, I found 2 ways: one would allow me to take skills that make me solo fine, the other would let me take enough support to be fantastic on teams but it would render me semi-uselesss solo.
Is there any chance you guys have a skeleton for the lowlevels (till 30-ish) that would allow me to do fine both team and solo (I'm not keen on using Build 2)
Thanks.
ps: as I mentioned before, I can't access mid's so you'll have to post full form builds if you post full builds (and not the code to paste into mid's)