Throwing some necromancer in can also be pretty helpful, it also pairs well with the Living Armor talent. Warfare/polymorph is actually a really strong combination, but I wouldn't worry about putting more than a couple of points into it to get some basic abilities like Tentacle Lash (scales with strength so it's a good heavy hitter early game, but doesn't benefit from crits unless you take the talent that allows spells to crit, which isn't really worth it as there are better talents), Wings is a decent extra movement ability, and some others can be great utility but aren't necessary.
All together it results in a pretty sub-par physical class. Scoundrel suffers from a variety of issues, the biggest being sub-par damage output but finesse armor also doesn't give you much physical or magical armor, so you will be incredibly squishy and that isn't ideal for a front-liner. Huntsman builds are INCREDIBLY powerful, though, so long as they are built correctly. In fact, I'd say you're doing a disservice to your party by having a scoundrel-based character since it's arguably the weakest of the physical damage groups. It isn't important to have a ranger or rogue.
