Out of all of those i would say tp foe would be most useful power for both PvP and PvE have it on my Ninja MM can quickly sort out problematic malta sappers before storming rest of the mob also very handy in PvP if your target suddenly runs with low health how much fun is it too tp them back its like "OI you get back here and take ya whupping like a man/woman/thing" 
also just plain being lazy and not running around zone after a target just bring them to the mincer 
will work on most but some will resist (Im looking at you eluded scrappers) 
also im not sure but i think increase density from kins may stop it 
may be completely off mark im sure someone will correct me. 
With the dentention field have black hole from dark misama set on my Ninja more useful in arena ive found not really used it in a high lvl PvP zone so may be worth trying. 
On manuvers nah wont be worth it the amount of defence your shields and enforcers give are more than enough the manuvers would be waste of a powerslot. 
Hope this helped im sure some other people will have other thoughts but thats mine have fun.
/Hi-Jack thread/ on a side note if looking for a SG and your character is a Union Mastermind Theres one Called "The Gang" an Sg filled with just all Thug Masterminds its on Union Villains Forum drop by and have a look/UnHi-Jack thread/
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You aint seen me right!
I disagree heartily with the maneuvers comment - it's a small amount, but when added on top of what your minions have, and dispersion bubble, you've got a big ol' pot of don't-have-to-do-anything.
After my Enforcers were slotted up for defbuff, and maneuvers and disp bubb were running and slotted, I didn't need to individually bubble the minions anymore. It's still useful for a boss, but most of the time the amount of def from the enforcers and your toggs combined keeps nearly all of their attacks from landing.
Toss in the occasional aid other and you've got yourself a romping raving MM.
DON'T eat muffins while I'm developing you.
Pants! Turkey Magnates! A man in a box! Rogue AI! Come one, come all, to arc ID 10107 - It's [i]'Not as long as some other arcs'[/i]!
If it is a stamina-less build I would advice to avoid TP. I will soon be respcing out Detention field because its gathering dust... and Maneuvers (although pityful by itself) is good to stack onto Enforcers' or other teammates' buffs. To replace Dual Wield, I would pick up Manuevers. And as Altec says, you should come hang out with the Gang sometime.
I am about to lose my dual guns (I know thwy look cool but stamina less build
) and will replace it another power. I am doing mostly Pve and some casual warzone pvp at the moment. So my question is what in the readerships opinion would be better (note have 2 out of medicine pool/leaping pool and leadership)
(1) Get detention field for blapper love
(2) get maneuvers to stack with ff and enforcers (quite fancy this one)
(3) get tp foe (and perhaps go with tp instead of leaping)
OR other...
Would be grateful for any thoughts,
Cheers DD