The one thing the UN needs to do is remove the "every country agrees before action is taken", simply have a large majority vote.The Russian veto has screwed the UN up.
Not gonna happen, and no it doesn't need to do that. You may as well wish for a pet dragon. The US recently stopped the Gaza ceasefire proposal which Included No Provision For Hostage Return As A Condition of the Ceasefire. In other words, they stopped a railroad. (Which was part of why UK abstained, although it was interesting to see the abstention). Look past the end of your nose.
List of vetoed United Nations Security Council resolutions - Wikipedia
In order to get the Major Powers to agree to participate, that concession was made because it had to be.
As an aside, fdr has made some interesting posts (in a different thread) on how one can propose to remove Russia from the UNSC permanent member position (since it took the USSR's place). That has a slightly better of ever happening, maybe, in some distant future although with China's current position that isn't going to happen any time soon.