I'm a snob and don't see any point for this to exist. If the physics are absolutely IDENTICAL, then it's all gravy. No need to play this over the original 2, but no reason not to, either. I'd consider getting a playstation controller that works on pc and getting this.
If it is a different engine and the physics are even slightly different, naw, I'm good. I bought that tony hawk hd remake thing that uses your avatar because I was missing the games. Was sorely, sorely disappointed to find the physics were different. Reverts didn't respond the same way, lots of issues.
I think anyone from the line tub community or anything from thps 1-4 (and maybe thug 1 to a lesser extent; thug 2 fell off a cliff and I don't know any of the games after that) could appreciate the turn-off for there to be anything mechanically different. Why learn to fine-tune your timing and instincts to adapt to a changed engine trying to remake something, when you can just use the same engine and play the original.
If you used a ps2 controller and fine tuned getting the spin with the kick trick on every grind, kick/rotate, grind, spin-outs (think that was post-thps 2 in this case tho), etc. Or spent hours learning no manual transfers for use during freestyle combos or no manual lines, even point *****ing lines for getting a billion+ point combos (thps 4), or 15-20+ mil in thps 2 (unless wall rides work the same which they didn't in thps hd, and unless bounces still work, no way could you do those lines).
I get that if I just wanna play the same game, I can. But isn't that sort of the point of a remake? To be fundamentally the same game? All I want is for the mechanics to be the same. If they wanna add manuals to thps 1, cool. If they wanna add extras, update the graphics, new characters or moves, whatever, cool. But I want to be able to interact with the levels the same way. I want pushing buttons at certain times to have the same effect.