This is a really terrible idea. Here are the negatives in my opinion:
1) It will make people less likely to log on at all as there will be little to do.
2) It will completely eliminate experienced players helping non-experienced players to do the instance.
3) It will further fracture the community into haves and have-nots.
4) It will basically make it impossible to gear a new alt getting to 115 to a level that would be ok to run T2 content.
This is one of the all-time worst proposals that I have seen from Turbine / SSG in nine years of playing this game. Please don't make your only viable end-game content obsolete.
Duruleth - 130 RK, Durindor - 130 Grd, Durabow - 130 Hunter, Durselm - 130 LM, Henckel - 130 Champ, Durbear - 130 Beorning, Dursong - 130 Mins, Durburg - 130 Burg, Durscap - 130 Cpt