That...is actually pretty brilliant. I was originally going to have Celestia be opposed to the idea of alicornification, but I may have Celestia change her mind to this. Cadence has the view of "We should make absolutely sure we've concluded things will work before proceeding", which is likely to take decades, but not millenia. Twilight starts out with the view of "We should start right now, why the hell are we even hesitating?"

This is partly because of the big red flag of having the protagonist share my personal beliefs. In this fanfic, it's unavoidable, however. Twilight is meant to be fairly rational, and thus, is meant to believe what's correct, at least eventually. Obviously, I think that what I believe is correct, or I wouldn't believe it. Starting Twilight out with a more reckless view, where my own view is closer to the Cadence stance, goes some way towards deflecting that problem.

Man, it's times like this I wish I had a fifth alicorn to throw in, because I have too many views I currently want to showcase front and centre.

"Do it, and do it now."

"Calculate everything out carefully, then act relatively decisively."

"Steadily make it happen, over several millenia, gradually making it so that the very worst scum of society are still as harmonic as the best examples of pony virtue today."

"Don't do it, as we can't accurately calculate the risk."

"Don't do it. Don't even think about it. You saw what happened with Nightmare Moon, didn't you?"

Maybe I need a fifth main character, but I find the views are much more legitimised by having them be spoken by an alicorn, rather than a societal representative, who'll be representing various arguments like overpopulation, pushing forward magical research, attacking the culture of the various pony races, etc. And there are only four alicorns, and randomly adding a fifth is a move I simply refuse to make.

With the exception of the third view, i.e, the one you just gave me, I was originally going to have Twilight, Cadence, Celestia and Luna hold those four views, from most supportive to least supportive. But your argument is just too good not to be featured in the fanfiction.

The easiest solution is likely to be to merge Argument 4 and 5 together, leaving Luna as the only true anti-alicornifying one, with the remaining three each believing it should be done in different ways, but I worry that might turn the fanfic too much towards the pro-alicorn view. That said, I might be able to make up for this by having a disproportionate amount of the social representatives be opposed to the idea.