I think the way the approval-ranking system is currently designed leads to under-allocation of the budget.
I left my feedback: Season 5 Feedback Thread - #6 by MaximeServais
Imagine we have a budget of 1 million OP. The top-ranked proposal asks for 100,000 OP and gets funded. The next highest-ranked proposal requests 1,000,000 OP, which exceeds our remaining budget of 100,000 OP, so it’s not funded. Under the current system, we stop here, leaving 900,000 OP unallocated.
However, if we had a system that allowed us to fund lower-ranked proposals that fit into the remaining budget, we could potentially fund other valuable projects within that unused 900,000 OP.