First, as someone from America, I have ZERO access to PartyPoker. As such, I think PartyPoker is making a HUGE mistake. Yes, players are the main contributing factor in discovering issues involving the game.
Having hand-histories allows players to act as a third-party regulator for the sites. This allows players to track suspicious play habits, and technical glitches within the game.
If PartyPoker is so worried that HUD users are gaining such an advantage, why not implement a simple HUD design within it's games? Why not remove the concern, and level the playing field for everyone. If users do not wish to use the site provided HUD, give them the option to simply turn it off.
As far as BOTs, super-users, and collusional players, all PartyPoker is doing is giving them an opportunity to improve their ( Cheaters ) ability to circumvent any type of detection. Talk about shooting yourself in the foot!
If the war to create a better poker site is to kill your player base, rather then the ones committing the crimes, then a serious rethink of priorities is much needed. Removing the last line of defense, AKA hand histories, sounds like PartyPoker is throwing in the towel and giving up.
Hopefully, the Leadership at PartyPoker will rethink this strategic course of action, and reconsider what is more important:
Profit or People?