I would LOVE to carry my 360 stats onto the PC. Why should anyone who already payed for their copy of the game, and made progress on their Online character need to start all over?
Uh... because they're paying for the copy of the game again on PC? Which is a whole new platform that didn't really have a previous version of the game in question. As in, there is no "last gen" GTA V on PC. So there was no existing Online player-base. Which could theoretically cause huge troubles in balancing, however...
I don't think it's that big of a deal in the long run. There's always going to be gankers and griefers in the open world. The PC version won't change that. But in terms of being competitively viable in modes like TDM and the like, skill will be all that matters with the elimination of mandatory 360/PS3 controller input.
I mean, of course you'll still play with people who are comfortable with the controller, but now you have your own keyboard and mouse. The controls you are comfortable with. So the core fairness is still there, if nothing else. (Note: I'm not talking about *you* in specific. Just people who are in varying situations when it comes to this whole thing)
It's going to come down to skill in the end, really. And come on, even with Online's heavy focus on progression and character building, It's still a "f*ck around with your friends" simulator at its core. At the end of the day, being a higher level just means having more options to play around with.
The positives do seem to far outweigh the negatives here. Because PC gamers like myself who were doubly foolish enough to both buy the game on last gen AND spend money on cash cards, can now transfer all of that to the PC version without having to pay anywhere near as much, in both money and time, to get all that progress back. Not that I personally progressed that far, but others obviously have.