My guess is showcasing (Connauton) as well, along with realizing that Chychrun is a young player who may not be ready for extensive NHL play at this point. Yes, he's done well, but it was a surprise that he's done so well. As mentioned, we aren't competing for a playoff spot, so give the kid some time off (the same goes for Crouse). I also wouldn't mind seeing Perlini and/or Dvorak get some time off at this point in the season if we can make some moves to allow some of them to switch out every once in a while (or bring in Jooris/Holland to reduce some of the wear and tear on the youngsters).
In terms of Domingue, they should definitely be playing him more at this point in the season (despite Smith doing okay). For one, as mentioned, DT isn't a huge fan, so Domingue would be a decent piece in a trade (since he has shown he can do well if given the opportunity). Personally, I'd like to see Domingue start in EDM, LA (or SJ), ANH, and CHI. Smith starts in SJ (or LA) and DAL. Domingue in BUF and BOS. See what happens at the deadline and go from there.
If we acquire a BU goalie of some sort at the TDL (for LD--I'm guessing Smith ain't going anywhere), try him out in BUF 2 and one of the CARs. Smith back in net for CAR 2. Re-evaluate after that (11 games) and decide whether to play Smitty or whoever is the BU is (depending on quality).
If we don't move LD, balance out the starts a bit for the rest of the season. I know Smith wouldn't like it, but it's not like he's going anywhere.