what Treydj said, about the antes is spot on. Im looking at the structure right now and thinking about how it was in walsall when i played,
on level 6 with the SB at 200, the ante was 25 insted of the normal 50. I think that the antes should always be a 4-1 ratio of the SB if possible, this makes the game flow smoother (and it brings the slow death of the rock) as gus hansen would say.
At the 300-600 level 7. the ante would usually be 100. a 3-1 ration of the SB. This encourages people to actually get involved because there is so much more out there in the middle to steal now. An extra 1000 on a 10 handed table.
then on the next level of 400-800, the ante would usually stay at 100, bringing the 4-1 ratio back into play.
if the antes are sorted out so that they are mostly at a ratio of 4-1, then we can keep the 500-1000 (level 9) instead of the big jump.....
so there you have it. the structure is great anyway, and the best value of anywhere in the country probably for the £75, but just a tweak with the antes and it will be even better im sure..