I think the update would only require a change in the payout system and would have no affect on the process of finding and submitting blocks. Just a matter of how you distribute the block rewards based on the % set by each user.

This would benefit those who own large gears like sub 100th, they do not want to gamble with it all, so maybe half for pplns to pay the power bill and the other half for solo mining, while it is very unlikely for me to use the split function I can see many people appreciating the change.