i think my uni is dying

1)Because it’s strong and cheap.
2)Yes. Or it may be your dream uni depends on what you’re looking for.
3)Aside from the fact that some people like shorter cranks for street they can be identical.
4)I don’t think that will be an issue but I would ask UDC to make sure.

If you want to know what I would get it would be the Nimbus street with the Qu-ax IsIs cranks.

if your on a budget get a DX if you have a bit more to spend get a koxx-one devil from renegade juggling and upgrade to street cranks.

unless i see something weirdly, you snapped the hub