1. Mainly because it corrupts more saves then it fixes. MOST IMPORTANTLY, sensitive saves, like the "Warriors" games for example (that and you have alot of n00bs running their mouths thinking they know hot-sh$* until someone who actually knows something, puts them in their place) Don't get me wrong, there are great staff members there that try to make the community great, you just have those disrespectful n00bs that out number the staff.
However, Never use Modio when it comes to rehashing/resigning.
That is the main problem why people saves get corrupted when using someone's editor you get the kids that whine,"h3lp m3! I us3d y0ur 3dit0r and I r3ha$hed and r3sign3d using M0dio!! Y0ur 3dit0r c0rrupted mah $av3!!!"
In a nutshull, alot of us pros are tried of hearing kid bit&* and complain how our editors are corrupting their saves when it is in-fact modio, then they deny it, disrespect you, and completely ignore you like modio is the greatest thing that walked on earth (because that's all they know since they think they know everything)
2. Not as of yet. I've heard unknown_v2 is working on it however.
**lol sorry, had a little bent up vent that I had to get out....been recently coming across those "kids" that PM me sh*t like that. Felt good to vent that.
lol Let that be a lesson to you Modio-kids.
Don't listen to me, you get no sympathy from me :D (as if they'll start listening now) LMFAO
I hope that answers your questions. ;D
(keep in mind, #1 are my views about that, some might agree some might now OR have other reasons)