What are the chances of NM actually implementing a "expert" mode of some sorts?

it's been mentioned here already, by "expert" mode I mean that after you beat the story you can switch to expert mode where every stage from 1-1 to 10-8 has level 60 enemies in it.

In all honesty, I'd rather get this feature than new characters. Right now I gave up on special missions and focused on BW/Blade/Kingpin bios. That alone takes around 200 energy and I usually just use clear tickets because I don't have any benefit from auto-playing other than shifters of course. To level up I usually run 10-5, I don't really want to do it but there's no other way to level up my characters from 50-60.

I know that NM has already done a lot for the players and I understand that this game is F2P and fully depends on people spending real money but I feel like this feature wouldn't hurt them .

Thoughts?