Not really sure about this, maybe for people with a bit OCD:
Might not as a data for the page of collection, but something that will satisfy my own curiosity: A statistic/summery of gold and bfp income and output: -> how much gold is spent on reforging, AH-transactions, upgrades(, by personal messages) -> how much income is gained by selling cards, getting BFP from daily boost, from quests, gaining of reserves, personal trades with other people -> how much BFPs are spent for buying boosters, for buying cards on the market, personal trades, .....
Maybe not worth to implement,