I hope the cast does get more of a chance. I've liked the casting (Peter, Gwen, Osborns, etc) and would like to hear them do more with the roles.
I'd like to hear a different Tony used if they ever did a non-RDJ version again but I think Wingert works in the role. I remember when Eric Loomis' performance would get a lot of online flack for sounding like RDJ but I always liked him. It probably helped that he wasn't written exactly like MCU version was and he was given the chance to really emote in the role.
Tatasciore has had the chance to play The Beast twice, alongside Blum as Wolverine. As much as he will continue to be a mainstay as the Hulk, I can imagine being back as Beast, if the chance came.