Oracle alteration shouldn't be a mandatory upgrade of sweeping lens
Maybe i'm weird, but i'd rather stick with my sweeping lens up to level 13 instead of oracle because of the long cast range it provides and because of a greater area of disruption.
The only reason why I think supports (or oracle users) prefer to ''upgrade'' that trinket is because of the duration. You can destroy more wards this way and can scout for even more hidden things.
I've never seen a games where people keep sweeping lens instead of oracle
But i've seen plenty of games where people keep totem ward instead of farsight alteration
So uh... maybe we can buff Sweeper's duration from 6 to 10 based on level to make it more viable during late game?...