I would be interested, Persona 4 is my next Vita game to play (that's right, I have a queue)
I also have several FF games on there and I would rather if they were enhanced versions. I am tempted by FFX HD on Vita, but at the same time, it is game that requires very extended sessions, maybe better for a home console. The ideal situation would be to get both and have cross play
I think the key is that they don't really need to do much work on them to port, certainly PS1 games are just fine. Of course, they can get a lot more money if they touch them up and add some trophies







