World of Kulan DM
Well, the group has a rogue, so maybe go with a bard. Also, since your PC is a kenku, you can make him from the Eastern Lands, so if you want to take a class from Oriental Adventures (if you have it) or one of the more generic 3.5 versions of the classes that ended up in the Complete Series, go ahead.I'm thinking either rogue or bard. Seems to me the classic roles have been filled, so no worries either way.
For OA, just don't take any Shadowland options.