I'm doing just fine on tactician with:
- Wyll, pact of blade melee build
- Astarion, Alert assassin, poison optimized
- Gale, donating/Feign death merchant thief, no merchant is safe!
- and MC, sword and board paladin generalist, a rock to build around of
On the second run and trying to beat challenges with new approaches.
I don't think you need to optimize much to gain an edge, though finding new ways to belt out damage is always cool.
[Edit]
Dude! have you seen monk play throughs on Youtube? They are hands down S tier. I'm temped to make Astarion shadowmonk.
What is a feign death Merchant Thief?