Dark/WarMace......I'll probably start one after my Fire/WarMace hits 50.
From your characters listing it looks like you shy away from drawn weapons though.
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Fire/DM is fun, but more of a heavy scrapper than a team tank without a fair amount of buffing.
Dark/EM is worth considering stacking stuns from the attacks with oppressive gloom.
Shield/WM is fun and I'd imagine shield/axe is similar.
It's true. This game is NOT rocket surgery. - BillZBubba
I enjoy Stone/Ice and Invul/Stone
So, on your list...
My vote will go to shield/em or fire/dm
I loved my fire dm, but I didn't find myself tanky-enough for my taste.
With power customization it might look cool to have a dark blazing aura along with the dark effects!
Not that I avoid weapon but could not find any fun ones I would really like. Axe looks a bit like Broadsword (Got two bs scrappers), never really tried war-mace plus it's all smashing/lethal damage.
Shield/EM looks shiny and pretty but endurance insane so is Dark/EM, not sure lol.
My favorite tanker so far is my Ice/Fire who never runs out of endurance, is close to invincible and does a lot of damage (AoE).
Going to give a try on Fire/Dm 
50 Ice/Ice/Force Blaster *
50 Ice/Fire/Fire Tanker
50 Kin/Sonic/Power Defender
50 Ice/Storm/Psi Controller
50 Stone/WP/Soul Brute
50 Spines/SR Stalker
Pinnacle | Virtue
@Black Heart
I'm enjoying an Invul/Fire. Can sit in the middle of big mobs and AoE.
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Ice armor Dark melee
the defence from ice armor will work nicely with the -tohit from dark melee :-)
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I am thinking that Ice/War mace may be fun to play with all the knock downs..and a couple of AoEs thrown in. I am thinking about rolling up a frozen cave man style character
"...well I have wrestled with reality for thirty-five years, Doctor and I am happy to state I finally won out over it." Elwood P Dowd (from the movie Harvey)
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I am thinking that Ice/War mace may be fun to play with all the knock downs..and a couple of AoEs thrown in. I am thinking about rolling up a frozen cave man style character
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So I wanna make a new tanker however I have no idea what to do at this moment! I've a Ice/Fire, a WP/SS, Fire/SS, Invul/Stone and I really love tanking and I'd like to try something new.
What about Fire/DM? Dark/Ice? Shields/EM I surely want something more... different to play!.
Any cool ideas?
Thank you!
50 Ice/Ice/Force Blaster *
50 Ice/Fire/Fire Tanker
50 Kin/Sonic/Power Defender
50 Ice/Storm/Psi Controller
50 Stone/WP/Soul Brute
50 Spines/SR Stalker
Pinnacle | Virtue
@Black Heart