ZCash transaction very slow! Z -> Z can take 30min for create and 5 hours for delivery. Z -> T creation time is 2-3 min, delivery up to 5 min (may be more, I don't check this). Now queue of transaction on pool is more than 1200 transaction (all want minimal 0,005 - ok.. now you can see your coins at "Requested" field, but need wait a long time). Does using several Z-Addresses on pool for payment help in this situation? Don't know. Really can help using multiple zcashd nodes, but it not easy to implement fast.
My ZEC is in Requested filed 7+ hours
http://coinsforall.io/#!/coin/ZCASH/wallet/t1MwXMw3zwRGrZaJoFCms1QENri9fDC7cdS
and still mining and hoping for payouts