Really every rotational piece has been marginally if not significantly upgraded.
Lipsey is a better version of himself at PG. Gilbert is a much better backup PG than Holmes.
Gilbert and C. Jones are just about as good as Kalscheur (the guy was second-team all-Big 12 for a reason, brought it every night on defense even if he could be somewhat inconsistent on offense) and much better and more consistent than Grill (very mercurial) and Holmes (inefficient) as SGs. Plus, you have another bench depth guard in Paveletzke for emergencies that the team last season simply didn't have (and missed late).
Milan simply wasn't a type of player the team last year had on the roster. He's a mismatch nightmare and always a threat to score -- teams are scheming to take him away nowadays, but that is just opening up the rest of the court for everybody else for the other guards and big men to punish them.
There probably isn't a Kunc equivalent on this team, but I don't think one is really needed with all the upgrades elsewhere. Watson is somewhat that (at least on defense) as the rangy stopper.
R. Jones, King, and Ward are all *MUCH* better versions of themselves this year. Pre-knee injury Osunniyi would probably be on that tier, but he was hurt for half the Big 12 slate and thus diminished.
The only guy off the team last year that I'd probably even want this year would be Kalscheur. Can't have too many quality guards in college basketball. But it's not like a pressing need with Gilbert/Jones around.