To me, unless they go all in before 28 and 93 are too old (if that hasn't already happened) and sign some big name(s) they go with status quo. Take your lumps this year with the kids. Play 53 with 9 like a few years ago FWIW and perhaps trade away 53 at the trade deadline. At worst I think you could still get a 2nd rounder at the deadline if not more. Focus on the best possible outcome for the expansion draft ensuring 5, 6, 11, and potentially 19 get the contracts they need.
Since 28 and 93 haven't lead them to a cup I don't think you can go all in especially with the uncertainty of 23 and 19 - hence my opinion of just going with what they have. Lot's of players are getting one year deals so perhaps sign a 3/4 line center to a one year deal and if not, and if 23 can't play, go with some combo of 21 or 48 or 82 as C3 and C4.
I'd rather be competitive in the 21/22 season and the next 5 or 6 or 7 when our D and Hart are peaking then hamstring themselves this summer...oopps mean this fall with a big signing.