Robert Thomas is dominant and I would love him even if he shoots from the right.
I think it's a move you do if you can keep Demidov and probably Reinbacher (too rare of a profile) from the prospect pool, everyone else is free game.
As many have written by now, I don't see it happening because he's still young and STL have a very decent prospect pool for a quick retool/rejuvenation - I think if they make smart moves they can look good within 3 years.
I'm afraid I haven't seen any of Buchnevich's games at center this year while Thomas was out and he unfairly had to carry the team, but his production took a small dip. If we look beyond the stats, I think he's one of the most underestimated defensive players in the league. Given he's Russian (for Demidov) and a left shot, I'm somewhat curious as to what STL's intentions are, even though he already extended from ages 30-36 (medium yikes). I think 8M is going to be typical 2C money as early as this summer. If they're selling low and he's legit at C, worth a look maybe?