I don't think there are so many things that people want to change to be more like retail, but there are definitely some things that people question about Vanilla. Why did Curse of Elements exclude Nature Resistance? That change alone would make Elemental Shamans at least somewhat viable for raiding. Would changing that one spell be so huge a violation that it just CAN'T be allowed? It's just something that seems like a huge oversight that did nothing to actually benefit WoW classic at all.
I don't want massive class/spec rebalancing, but something as simple as the fact that Ele shaman was useless due to bosses resisting their nature spells all of the time seems like a very easy and simple change that wouldn't kill the spirit of Classic at all. Should ret be a real dps spec? No, I don't think so. It's a hybrid back when hybrids were brought because they could do multiple things at once, but none of them particularly well. They weren't flawed because of an oversight, they were flawed because they were just designed differently.
So keep the spirit, but fix some dreadful oversights, yeah? Seems pretty fair to me.