I am just wondering what it would change if you put the 500 cap. Your pga buddies can still sit at the same table and do their dirty work together no?

One other system might work: you install table limits but in a way were you have a large enough upper level group to always have 40 to 50 active players on most times of the day. Now with this proposal, you are not able to sit at a table of and fill one specific table. You sit in until 21 people (28 could of course work too) sat in and all players are randomly divided in 3 or 4 rooms. If you have 2 buddies sitting in, there is a 1/3 or 1/4 chance that they will be put at the same random table.

you should use this system at the lower level tables also because i have witnessed the biggest pga's there and not at the top tables.

I also think there should stay a normal table system like we have now because I would want everyone to have the option to play with a few friends (not pga, only friends who just want to play at the same table because playing kdice is fun you know!) if they want to. So maybe leave the 0 tables out of this system.