I don't think it's much up to MM itself at it simply uses PS3's built-in function in cooperation with JB dongle payload or cfw to perform a simple redirect only so unless somebody will provide a new option in payload / cfw or patch the games itself I doubt there is much that could be affected by Dean directly.
/app_home is not an actual folder, but a virtual space for game developers to perform various tests during game development process. Using /app_home as game root folder is supported in some games, because developers simply didn't remove it when game was created/completed and sent to Sony for mastering. /app_home is used on test/debug units because there is no actual bd-rom disc of the game being developed.
Some games obtain their working directory by using specific functions and these do not support /app_home. So a game either works or not - there is nothing to improve there.
I know I shouldn't get my hopes up, but its hard not to with your track record on getting stuff done :-)
The weak link with the fat ps3's was always ylod from overheating, it seems that with the slims the weak link is the blu-ray drive. 100% discless support would be invaluable to so many now but mainly for the future when all these cfw ps3's drives kick the bucket.
I have 2 ps3's both of which are kmeaw 3.55. One is totally ok but the other has no drive, if you pull this one off I would remove the functioning ones blu-ray drive to allow better cooling.