Yep, generally you don't want anything the TV manufacturer markets as "enhancements." They basically all add things to the signal that were not part of the director's or video editor's vision. Any cinephile will remind you that there is one correct setting for "brightness," "contrast," "color," and "tint". "Sharpness" should almost always be zero, and any other setting that claims to "enhance" the picture should be turned off for correct output.
The worst ones now are the "motion smoothing" modes that take your normal FPS movie and try to interpolate them up to 60FPS, 120FPS or even 240FPS, giving them that cheap, crappy "soap opera" effect. Turn it off as soon as you turn on your TV for the first time.
Of course a modern console only managing 30fps is the actual 'bug' :-). But I agree that's one of the narrow exception cases where an 'enhancement' might be a net benefit. Although if you're going to use synthetic frames, doing it in the console can be better because intra-frame motion hinting might be available and, even if it's not, the console's frame gen is trained on game content where a TV's chip is cross-function and far less capable (both in look-ahead and motion vector count). But I know some consoles don't have frame gen, so in that case it's a win.