Good points. I still love, for example, "The Basketball Diaries," and the fact that the movie was almost the Platonic Ideal of a terible movie matters not a whit, since nobody remembers it beyond a few Leonardo DiCaprio fangirls...
But I think my objection to the Robotech movie is simpler than that. It's harmony Gold. They way they're run nowadays, Macross is actively blocked from reaching other shores (legally, at any rate...) in favor of Robotech. Thus, anything that allows HG to profit from Robotech is just forestalling the day when I can go out and buy a nice, well-subbed, R1 Blu-Ray Macross Zero set. Thus, I do not want HG to profit.
Plus, I'm more than a little worried that maybe we're all wrong, and HG (and WB) CAN, or at least WILL make a Macross-based movie, and Big West will do nothing to stop them. Thus, HG's legal standing will be justified, and all the Robotech fans will laugh at us, like so:
"SEE WE TOLD YOU, HRAMNOY GOLD OWN "ALL" OF MACROSS! ROBOTECH FORVEER!
HEHEHE"
And I really don't think any of us want to see that happen...