So when I take 1 healer into Garuda ex, or 1 healer into Titan HM they should be patched as well?
The argument '1 tank skews blah blah' is just silly. Almost every aspect of this game, exceptions being CT, you can clear content with unconventional set ups.
Sometimes the unconventional is easier and finally becomes the norm.

There is no tree glitch here, no medica while jumping off Titan platforms, no 'bug' to speak of. It is the way the content was made and no terrain is being exploited.