It's clear from the comments already posted how much each region is doing their own thing with little acknowledgement or adherence to the rules, either formal or informal.
Some of the differences include:
Amount paid by each competitor and how much goes to the host.
How many games are played.
Refreshments provided
Publication dates of meets.
Format of comp on the day.
Format of finals - if indeed there are any for the region.
I'm of the same opinion as
@Tucks , as well as many others in the Midlands region. That having a competition to determine who goes to the final at Daventry kind of makes a mockery of the whole league format. The fact only 2 from each region making it is also a step backwards I feel, it was always a great opportunity to play wth, and make friends with, people you wouldn't usually play with, such as from Scotland or Ireland.
(I'd like to point out that I said all of this BEFORE the Midlands finals.) I even said on the day that if it was me and Nick in the final game, I wouldn't contest the game because as far as I was concerned he had won the league over the course of the season and shouldnt be decided on a single game.
Having finished 2nd (my joint lowest position in over 10 years) it'll be the first time I haven't played in the finals, despite finishing 2nd in the league with more points than anybody else 1 poor game and that's it. Not the way a 'league' usually works.