Absolutely they miss him. He's our best competitor. He changes the intensity of the whole 5 man unit.
A lot of people don't want to hear it because Smart and Baynes are our two most unsexy rotation players (not counting Semi), but these guys have the toughness, competiteveness, and defense that we need to be a better team. That stat someone posted the other day about us being 15-0 when Baynes plays 23 minutes or more may be fluky but it's also pretty meaningful. Smart is the same kind of guy. These guys don't just want to play well, they want to win the games even more than they want to play well. Yeah, they can look like offensive stiffs at times, but these are the guys you want to go war with (to use a bad expression).