Lock out feature for number of contracts allowed to trade

Something I would find very helpful would be allowing traders to lock the contract size their allowed to trade for the day. This would assist in eliminate them from accidentally over leveraging. But also builds the discipline of them not attempt to revenge trade to make back loss profits.

I understand there is feature for PDLL but, if someone trades .02 vs 2 minis during volatile moments it can keep them in the game to allow them to make back the losses they would have encountered.