Maybe a stupid idea but hear me out
I don't know riots stance on devour and personally I don't have a stance on it either I use it sometimes and sometimes I don't and of course this is just an idea and would need balanced better.
What if devour gathered stacks like
?
Like I said this would need to be balanced course so don't hate on me from throwing this out there. An example I can think of how this would be useful is it gives junglers who use devour more incentive to gank just because they will still be gaining stacks maybe on a timer that gets disabled for x amount of time when you kill a jungle monster so you cant finish devour even earlier than it already gets finished.
I personally have no issues with this item but when using the item I will say my mindset does change mainly because if I do bad I fear I will scale into a useless piece of trash and be of no use to my team lol but when it does work im not saying its overpowered but gold well spent but I do guess if you made the decision to go devour when your team is losing that is your fault and you should be punished for it.