Thanks for the replies guys, i know and agree theres no swiss army knife for all schemes and strats just looking for a great all round crew for the good Doctor. I kept my original post very vague for this reason to provoke peoples ideas.
Reasons for certain models are as follows.
Doug-(great for killing and injection gives him another tactical dynamic if needs be, his upgrades are for the scheme marker benfits as well as the trigger to get more constructs. Plastic surgery i have found has become a nice surprise with things like terrifying (living) as well as the obvious buffs to his poison preading)
Zombie chihuahua-Nothing further needs to be said i guess.
CAnine remains-Scheme runner
Crooked man-Bit of poison, good for scheme markers and tough to shoot which stacks nicely with seb's undercover
Flesh construct-Other than being a tank he is a great vessel for copious amounts of poison as well as a good candidate for frame for murder in seb seems too obvious
Nurse- One to stay in range of Mcmourning in case he really needs the buffs/heals/ poisons, the other to top up the construct with poison as well as others .
Crooligan-Obvious scheme runner/frame for murder candidate, can also be used more defensively to screen other units in collaboration with sebs undercover as well, and a bit of poison too i guess.
Rotten belle- No resser crew should leave home without at least one, lure into mcmourning or even just into sebs catalyst/induction aura.
Seb- The power of the crew in my opinion, undercover as well as catalyst/induction, transfusion is a must as noone else can/should take it, those are not ours is just a nicety if seb finds himself with nothing to do and a corpse marker nearby i guess
Thats my working anyway, i am interested in Rafkin and will look at guild autopsies when they come out