The sad fact is Chaktoay is ever so much more interesting of a character once he becomes captain of Voyager in Path to 2409.
Past Season 3, Tuvok and Chaktoay just felt like dead weight. Heck, once again, Chaktoay only got really interesting for some short bursts when we saw him really play Anthropologist or when they really continued to build the dynamic between him and Paris (IE Dark Frontier).
Once again, one of the things that made the series a lot more fun during the novel restart was when Kim became the Cheif Tactical Officer. It made me fell like if he had that role during the main series, he would have felt 200% more useful and once again, I keep feeling bad for hating on Tuvok, but he felt like dead weight most of the series. That would have been a fun change up.
Honestly, looking at things with a critical eye, I think this is how I would have laid things out after season 3:
---------------------------
Main Cast
---------------------------
Captain Janeway
Lt Pairs - Conn / XO
Lt Torress - Chief Engineer
Lt JG Kim - Chief Tactical Officer
The Doctor
Kes
7 of 9
---------------------------
Reoccurring Characters
---------------------------
Chell - Cook
<a bunch of others, lets open the flood gates>
---------------------------
Leave Go
---------------------------
Lt Cmdr Chakotay (Beltran)
Lt Cmdr Tuvok (Russ)
Nelix (Phillips)
Honestly, through and through, I think this would have made for a lot more compelling stories.
I can think of no less then 5 episodes it would have spared us from >.>