There is no reform for Islam...not possible.
That may be true, but it’s beside the point.
Reformed Christianity is still Christianity; its source is the same as Roman Catholic Christianity. Aside from a few fringe lunatics, everybody recognizes this fact. Both sides of the RC/Prot divide are recognizably Christian, with the Person of Jesus Christ as their root.
Similarly, reformed mohammedanism (if such a thing could exist) would still be mohammedanism. Its source would be the same as that of the shia, sunni, and other existing branches of mohammedanism. Mohammedanisms source is not God; its source is the demon inspired ravings of a caravan raider. No possible reformation can redeem that; no possible reformation can improve it. Reformed mohammedanism would still be evil at its roots.