Yeah, I think that Indy will get another show, and if they wanted they could just not put the Nazis or the Russians in at all, just do some classic adventures fighting other archeologists.
I'm certainly not here to dispute that the Nazis were awful people, but I'm pretty sure that the TV show never showed them it focused on young Indy and his adventures during WW1. Also, a movie like the first or second nowadays would certainly get a PG-13 rating some state that this was the kickstart for the whole 13+ rating.