User blog comment:Sonamyfan666/Sonic Advance Collection/@comment-26041739-20150523152022

The features what i would personally like to see (if Sonic Team ever decides to make this whole collection, ofcourse!) - Unlockable playable characters to Sonic Advance 1-3 & Battle: Shadow, Rouge, Emerl, Super Sonic & Super Shadow (especially for Sonic Battle) - Simplyfied version of Special Stages for Sonic Advance 2 (more closely like what in Sonic Advance 1 & 3) - Additional non-GBA Sonic game; Sonic Pocket Adventure just for kicks !