Randomness is fun, but there are many levels of randomness... it's generally a good idea to reduce it (after all, there's a lot of randomness that's not related to how the game starts).

Whenever I say "setup", I mean how tiles AND dices are distributed.

1. Maps are fixed (per table) already.
2. For each map, create several different "setups". Each setup has fixed (meaning "not changing in between games") way of distributing tiles and dices.
3. Just before starting a game, draw where every player goes (so that people will not choose one seat over another).
4. Write positions every player acquired to the database.
5. Once you get "good enough" amount of data (I know, it would take a lot of time), decide which setups are not fair (because some starting positions win/lose much more than others).

Less important things:
* you could create a cycle - every x weeks you weed out the weakest setups and generate new ones.
* I'm not sure if every table has a different map right now, but due to the time problem (there's only one game every x minutes and you need a lot of data), you could create less maps.
* if you implement what I said above, higher ranking tables should matter more than 0+, because new players tend to play in a bit silly way (no offense to anyone).

Almost totally separate idea:
* draw different maps for each table for each game... people tend to stay on the same table (at least on 200+ tables), because it's easier to gather other players (ppl are there already). And it gets boring to play the same map over and over.