Here's how I see it...
I have been crossing my fingers for quite a long time for a Legacy Niagara; a Vision Line Niagara would be incredible. With MR tooling up a fix for the gear issue, it seemed like a sure thing. I sold my CCII Niagara a while ago in anticipation of what would have been a legendary legacy offering. Just look at how often the gear fix form kept getting comments... on a fifteen year old TMCC RS4 engine! That's a hell of a following! You know that thing would sell! Yet, the legacy Niagara continues to hold the allegheny's former place as being the longest overdue updated steam offering...
Except for say a PRR T-1. I'd put my $ on them doubling down on another PRR loco.
Lionel has been doing a much better job recently about putting things in sequential catalogs that go well together. My guess is that with all the recently catalogued PRR passenger cars, a Vision Line T1 is finally looking like a real possibility.
My longshot bet is of course the J3a Hudson. Its gotta be coming up soon but unlikely in the Vision Line. Better chance of this one gracing the pages at the head of a premium heavyweight Century set.
Either way I'm happy because at least one of the 3 above has gotta be just a catalog or 2 away.
Looking forward to the announcement...