for those interested here are some links that discuss it.
@RIOT, why not make sated devourer proc every 3 hits?
http://boards.na.leagueoflegends.com/en/c/gameplay-balance/wqFcKqhP-riot-why-not-make-sated-devourer-proc-every-3-hits
Devourer is a handful to balance around
http://boards.na.leagueoflegends.com/en/c/gameplay-balance/KHLzbH0a-devourer-is-a-handful-to-balance-around
This last one is my idea for changes that's inkeeping/stays true to current devourer without its hard to balance aspect. let me know what you think
Devourer idea: Borrower's Bounty
http://boards.na.leagueoflegends.com/en/c/gameplay-balance/7ilJXEab-devourer-idea-burrowers-bounty
as the name alludes to, essentially borrows from future autos and applies it/compresses them into one auto for when you need it most.
another fix would be to ensure that the combined healing and dmg from current sated ghost/clone's auto does not exceed a certain number (say 120 as if you had 120stacks on the old devourer). but in this case it defeats the purpose really and might as well return to the old stack system.