What happened to 2.0???

Yikes, what a disappointment. Dont upgrade to 2.0! I havent run it yet on my 5th gen iPod touch, but on my 4th gen this version is filled with graphical glitching, horrendous slowdown, crashes, and quite frankly the new menu system is rather dull and boring. New high res graphics for retina displays? Well the game looks crappy on the 4th gens RETINA display.
Also what is the$1.99 Level pack? Extra levels? A sneaky way to unlock original game levels? More info please!!
The awesome intro story and opening level? Gone. Oh and your game progress? Say bye bye to that as well.
It appears that the game is under new management. Which seems to the root of the problem.
Thanks for breaking a already perfect game. :(

SgtCrispy about Giana Sisters, v2.0