Whether you enjoyed the last character re-work of Mr. F, I would just like to encourage the Devs to keep 'em coming. I, for one, really enjoyed this.
I’m still not sold on if I enjoyed the previous build of Mr. F or the newest one, but I know that I played him a butt load last week and am still using him. Character re-works are like having a brand new release. Hey! Maybe you could do more of this D3, and put more re-works in the rotation instead of releasing new characters every two weeks to help slow dilution. I jumped at the Heroes for Hire offer w/Mr. F, Invisible Woman and The Thing, as Mr. F became a feeder for Surfer. I now have 6 covers to acquire for Mr. F before I can champ my Surfer (w/3 saved covers). Additionally, I bought Mr. Fantastic’s H4H cover prior to his Crash to get him that much closer to lvl 300. Thats 2 H4H sales that I would have normally skipped (I never buy new release offers of any sort, Hero Points or Real Money.)
So, to me, this re-work generated way way more interest than a new release does.
There are still some 5*s out there without feeders (Archangel, Strange, Hulk, Spider Man BIB, Kitty, Cable, Kingpin, Gambit (Edit).
You give people a reason to try out reworked 4s, an direct avenue to increased 5 acquisition, a way to still generate income regularly and a slow on dilution, and that seems to me like a quadruple win.