Guess it depends how far along they were in the reskin project. I thought there was speculation that they scrapped that project to do PS2 because PS1 coding is a mess. It would be awesome to see if they do it though! My guess, they will release F2P with cash shop and sell weapons and ammo. Probably make nades cost resources or something (bye nade spam).
I hope they don't think about making vehicles cost resources though. I really don't like it in PS2. Vehicle timers are enough with the amount of vehicles there are in PS1.