You have a point:

" Unless those guilds that dont fill in frays automatically count as losses and those losses add to the reward pool "

I agree with you and this is definitely planned to run in a proposal in the future, however @cryptomancer told us in the discussion thread in discord that this change need a significant amount of coding and we cannot expect that this will be quick, so this proposal consist from the things who can be changed quick and later we want bring in your point.
You can check out in discord - I put both topics in the Draft Proposal suggestion thread in splinterlands discord