That won't help. Qur'an was also edited and altered over time.

Personally, I don't see a need for Christians to covert to Islam, especially for something so trivial. The religions are so similar already, and Muslims already believe that Jesus was a prophet and other aspects of Christianity. If a Christian has some deviating opinion from mainstream Christianity, I am willing to bet good money that there was already a sect or group that had the same idea a long time ago. There's no reason not to just consider oneself part of that group without having to convert religions and still hold Islam in high regard.

I know too many people that converted to Islam from Christianity for silly reasons like this that were already addressed by some other Christian group or whatever, in my opinion. I understand if someone is coming from a totally different religion and wants to be Muslim, that's okay to me I guess. But Islam and Christianity are already so similar, there's almost no point. I think some people just got caught up in the anti-Islamaphobia wave (good thing) and then fetishized Islam as the better or politically acceptable religion among Leftists that doesn't have similar issues to Christianity (not good, in my opinion).

It does have the nice feature that the holy book as it exists is definitely a faithful copy of the one dictated by the known, independently attested historical figure.

Of course, most of the actual practices derive from the Hadiths, lol.