Sort:  

That's one approach. I'd prefer if the overall split weren't dependent on the auction/penalty. That can be done by giving it to later curators on the same post, as suggested in the OP, or I think better by keeping content and curation in separate pools according to the specified allocation (be it 50/50 or 75/25 or whatever). Any penalty on curation of one item would slightly increase the available funds for rewarding curation on others.

Coin Marketplace

STEEM 0.15
TRX 0.16
JST 0.028
BTC 68123.34
ETH 2416.53
USDT 1.00
SBD 2.35