This exploit has been going on for so long... the number of botters has increased more lol.
The fact that people are turning to botting an exploit just to get more tp makes it pretty clear that our current tp system is broken. It also shows a solution: you can convince people to push content by giving xp and tp for completing instances. And I dont mean just the xp/tp you get for running and killing the mobs. I mean tp/xp in the form of a repeatable quest, or orbs, or something. A large tp bonus, equivalent to 1/2 or 1 level for one skill per run. A level 55 instance should give enough tp to give 1/2 of a level to a level 55 skill (For any class who runs it. If i am level 72, but short on tp, i should be able to do a repeatable quest in dl to get my tp up to snuff ... or at least up to lvl 55). A level 72 instance should give enough tp for 1/2 or 1 level at lvl 72 for a skill.
I generally dont enjoy chaning the base functions of a game, i know that you can tp farm by killing endgame mobs with xp/tp pots on, but that method of gaining tp has just resulted in players setting up bots to kill mobs and to take advantage of glitches like this one on reni. The only reason i propose a change to the way our dailies and our tp system work is because it needs a change.