Don't know if hacking is an issue or not, and I seriously doubt anyone, other than Htc. staff themselves and the eventual hacker, has an informed opinion.
Hacking is, IMO, the most dangerous threat to this (and any other) online game. Taking the small bits of information that leak on this issue, I think Htc. has taken the most appropiate way to fight this, and based on my online experience, it is not an issue nowadays. Maybe it happens, I don't know for sure, maybe I'll never now, and I don't care. All I can say is that my online experience is, overall, really rewarding. All strange things happening to me in the Arenas are possibly due to net lag, lack of skill, etc., before I can possibly think in a hack.
If you have a suspect on a hack, have the film sent to Htc. (I usually fly with Recorder ON). Unless I have proof on contrary, I trust them. I have none as of yet.
On the price issue, I could care less.... I vote with my wallet on a monthly basis. If I ever become uncomfortable with the game, my vote will be $0. At the time being, apart from the occasional burst in Ch1 (please have my appologies for that), I'm having a hell of a time with this sim/game/sim. So my vote is $30....errrrmmm....yes.
Cheers,
Pepe