Vesta class is in the works, the Deves has stated this, also, the Wells class can be used in STO, you guys keep on forgetting that all we know about the Wells class is that it was use in the 29th century, we don't know when the first Wells class was first built, for all we could know, it was built in STO's time, the only ones who truly know are the ones who first came up with the Wells class.
Actually, the Vesta-class is supposed to currently be investigated. They never went so far as to say it was in production: legal hurdles to leapfrog over. DanStahl and CapnLogan did say they would like for it to get into the game.
I'd like to see all 3 ships. I’d like to see more ships in general, but I’d much rather that they buck the trend like the wells and proxima. The vesta does look nice though I do hope they’ve not run into a road block on that ship and if they have ask they should for the wells.