I'd be okay with a remake or remaster of Chrono Cross (and/or Xenogears). Do I think it's going to actually happen? I won't believe it until I see it.
That said, in any case, I almost assuredly would not buy it on PC (meaning that I wouldn't buy it at all, given that I don't own any consoles), given that it would be a modern Square Enix game, and as such, the likelihood of it being infested with Denuvo (or something equally terrible) is around 99.9999%. After all, it wouldn't be the first time that a remake of an old-ass Square Enix game was contaminated with such dogshit.