I'm far from the most experienced person in paintball, but my opinion for what it's worth is:
What paintball really needs to advance as a sport, in the UK and any other country is an international governing body that all leagues look to.
Untill we are all using the same rules and the same format i don't see how paintball can advance past where it is now.
To put this into context:
Take Football (Soccer) as an example. Football is played in most countries around the world from lowly village sides right up to national sides representing their country at the world cup.
The thing all these teams have in common is they all play the same format game, with the same rules decided by an International body (FIFA). If all the football leagues around the world used different formats and rules etc, would it be where it is today? No chance.
Untill paintball has this i don't see how having a National league in the UK will have that much effect. I'm not suggesting Paintball could ever be as big as football, but it could be much bigger than it is now.
I heard talk awhile ago about paintball at the olympics. Frankly i don't see how this could even be remotely feasible given the current situation.
As i have stated i'm not that experienced but this is how i see things. Feel free to point out the error of my ways. I'm here to learn.