For pools that don't show round shares, but show duration and hashrate, we can estimate the # of shares:
Total_Hash/s = (((Current_Shares - Shares_Before_Delta) * 2^32) / Delta)
Assume we compare from the start of the round, so
Total_Hash/s = ((Current_Shares) * 2^32)) / Round_Duration
Current_Shares = Total_Hash/s * Round_Duration / 2^32
And then apply some factor to during depending on stats delay...
Thoughts?
Doable except pools who dont show round shares also dont tell you exactly when round started(sometimes current round is delayed by an hour)