Quite interesting. I would split it into two separate items though for your two stated purposes. Primarily because i think that the first idea has the best chance of being implemented while the second...not so much.
I would suggest that there be an IS item that resets TP on one individual skill . I also propose that it only be 8 or 9 diamonds.
Your second idea appears too complicated to implement well.
I see you what you mean Auros and where it was confusing, so I took that out! (Made a bad example) I think that it should have only 1 purpose- To reset one specific skill of your choosing. Also although I love what you had it priced at, I am not going to lie we need to be realistic and if we wanted an item like this we have to make it appeal to gameforge in order for them to profit from us and truthfully I don't think 30 to 45 diamonds is that bad!
as much as I hate to make references to other games, but does "dual talent specialization" ring a bell?
Ermmmm I can't say I do Cike, I haven't played many other mmo's (being young has its disadvantages)