I started that thread about 182 elevator authority, my 182 has a smaller elevator than the newer models, not sure how that compares to the relative difference between newer and later 206's. I've put a few hours on since then, and this is my new stance:
I tried rolling the trim forward on final, didn't like it, it just makes me busier at a time I'd rather not be.
I've fantasized about swapping later tail feathers on, but the reality is I'd buy a new plane (probably a 206) before making that sort of investment unless I had access to a local wrecked 182.
I don't recommend a cuff, I don't have any experience with them, but landing at a lower airspeed will exacerbate the elevator issue.
I might try VG's.
....but the reality is, the smaller elevator makes for a trickier flare, but at the end of the day ballast and skill are the biggest gains. Neither of which require an STC.