A heirloom theft would just make alot of people uninstall crpg. It was (still is) the only thing the more active people are doing, looming stuff. Leveling up past 31 makes little sense unless you are mostly inactive(like me, i don't want to retire and be low lvl for weeks), or you are done looming everything, and even then, it gives a small advantage for a huge grind. So, taking away the one and only thing from a rpg point of view people were doing, well, it might have a positive effect, just one server needed.