Some things we publish because of the potential for me doing something nefarious, for example, we publish all of the blocks we find, which can easily be matched up to the work we send for miners, and you can easily see I'm not skimming blocks (a large number of other pools don't publish this info). We certainly have no requirement to publish anything, but I try to publish as much as possible to make sure everyone understands I'm being as transparent as possible (within reason), and that we're all on the same team.
If you published the following, Goldie can figure out if he is being paid about the right amount:
1) Add "pool hash rate" to the recently found blocks stat. I presume my approximate share would be (my average rate)/(pool rate)
2) Coin Conversion transactions: Coin, time, # of coin converted, Net # of BTC received)
So, if 12 urocoin were mined when the pool hash rate was 93GH, and my hash rate is 6GH, then I should be allocated about .77 urocoin (ignoring pplns effects). That number can then be compared to the earnings log.
If 24 urocoin are then converted to .18 BTC, then I should get about .00578 btc.
So, the only piece that Goldie is missing is a log of conversion transactions. Although, if I recall correctly, gains and losses are allocated to current miners at the time received (coins got stuck at exchange, price went up, and people currently mining benefited).
So, Goldie can figure out for himself if he has the right payout by:
Using the Recently Found Blocks to estimate his share of the payout (he would have to pull the pool has rate, and use his own average hash rate).
Compare that to Earnings Log for his miner, with slight differences (averaging to 0 over time) likely due to PPLNS effect.
Pull the spot price for the coin. Compare that to the Earnings Log.
PW would then have to somehow disclose the allocation of conversion gains/losses. With that adjustment, he should be close to the actual payout.
Everything you mention is already listed on the site. He's asking for the data regarding WHY we switched to a coin (the price/etc that made us consider it the right choice), not the data once mined (which is all public already).