It does seem like a simple idea and should definitely help and I can't personally think of a way this could be abused. The lotting system doesn't change it would simply just need editing since the system already knows if you can need or greed (since it greys out need if you cant) so it should be able to use that information based on the party setup eg: 1/8 can need, has player with /need lotted need if yes make drop timer to 0 and then it would drop to the person who needed. Then it should work pretty simply whether there is 1 or the entire party can need. eg: 5/8 can need has all players eligible lotted / reset timer to 0.

Though that could also potentially be a nightmare to code in and come up with all sorts of bugs like the loot timer ending when its not supposed to etc... Only the dev's would know the amount of work and how simple it really is to implement.