This is a follow up to How to construct potential form for adjectives
I'd like to know how to say "can be x" where x is an adjective, in a casual way. For example with a friend, this seems a little stiff: "敬語凄い長い可能性があるね。” ("Keigo can be really long.") Isn't there a casual term more relevant for this situation? かもしれない doesn't seem relevant as I'm not expressing doubt.