Addaru si Bashan Kellan:
It looks like the group is fairly well covered for its talents and rather large to boot. :D
Anything in your opinion Jennor that could help round it out?
Well it kind of tough since there are only so many non-channeler classes.
So just to re-cap (cutting out the channelers):
Human Ebou Dari Noble (maybe Armsman and possibly headed for Blademaster?): Ambrogio
Human Aiel Algai'd'siswai (I doubt he's multiclassing or going for any PrC): Dorogar
Human ??? Wanderer/Gleeman: Tolan
Human ??? Woodsman/Wolf Brother: Tovak
Ogier Armsman? (maybe going for Warder PrC?): Alton
The non-channeler classes are:
Algai'd'siswai
Armsman
Noble
Wanderer
Woodsman
The non-channeler PrCs are:
Blademaster
Commander
Gleeman
Thief-Taker
Warder
Wolf Brother
As you say, we pretty much cover the field in many ways (although Marissa might know more about what's going on with Ambrogio and Alton as far as what classes they really are).
I should mention that Nala doesn't currently have a bonded Warder... but perhaps you don't want to repeat what has been done here in this game? ;)
I would say that if Ambrogio is going for Blademaster and Alton is going for Warder.... then perhaps either a Commander or a Thief-Taker might be good.
So perhaps a Noble or Armsman or Wanderer. Tolan is fairly skilled but he isn't exactly focused on traditional "rogue" like Wanderer skills (he has some but he is more a gleeman type wanderer).
I know Addaru is an Armsman (or at least I think he is) so I realize you might not want to repeat that.
A Thief-Taker could be useful and a Commander might be interesting (especially if the Commander were a mix of Noble and Armsman or something like that).
I suppose you could always play another Aiel Algai'd'siswai if you wanted to. OR... you could try playing another Ogier but one who is more "traditional" that Alton's sword using Warder.
Sorry I can't help more but maybe Marissa has something in mind? ;)