If we change the name on the wiki, and my video, start calling it Ariel and Ariel 2, it will be simple. I'm active wherever there are plastics so I can include it in my signature and so on.
New members would see "Ariel" on the lists, and only be confused where people have called it Uriel in the past. Once I'm done doing articles for both, then a note can be included to explain that confusion. That should not be too long, either. There are a couple of other places which use the wrong name that can easily be corrected.
Seriously, just because we're used to an incorrect name doesn't mean we should continue with it...
Again "Shining Dog".
Again, almost all external sources refer to them as Ariel/Ariel 2. The only ones calling it Uriel are those that have seen mistranslations from Damashii, Here, etc.
Honestly, given both Anime's pronounce it as "Ariel", and all published instances of the name call it "Ariel", I think that's pretty much a consensus.