Jesus Christ no, you've got it backwards. No Kenner nonsense, Soldier, Scout (And versions of the Scout for every animal present), Stalker, Praetorian and Neomorph by all means.
I don't mind if it goes more advanced than we've previously seen from the USCM- it's time for an upgrade anyway.
Totally agree with your hopes and concerns about the genre though, rarely is an MMO today worth a look.