I was aiming higher since I am quite sure that most people here would pay even 2 and math is ruthless.
20 people x 1.5 mBTC = 30 mBTC
23 people (wouldn't be more than this difference) x 1 mBTC = 23 mBTC
But this is community pool and I will honor what majority says. Doesn't really matter in the end.
If the fee is 1.5 mbtc, I think the number of participant wouldn't be more than 15, so 15 x 1.5 = 22.5 mbtc. Either of 1 or 1.5 is fine for me, but I'd prefer 1.