Nah man. I can see how you got there, but I am reacting to two separate things separately. The combination is indeed confusing, I agree, so let's not go there.
Legacy Op is small, I don't agree it was worth going for that to match this trailer, done. I agree they'd get flak if it didn't match it, but let's be real, they're getting flak now that it does because it results in a smaller Op than we could have apparently gotten.
Now the trailer itself, and the notion of pack-in G1 Op trailers below the more luxurious Commander price point (Commander seems like the, heh, optimal price point to get an effective cab and a trailer that checks all the boxes). And getting flak.
Like I said, I was fine with the ER trailer, it did the job well enough. Sure, no Roller, but it had the internal drone arm whatever guy, that's not bad.
But when Hasbro does go the extra mile to make a trailer just to complete the package, it gets subjected to enough budgetary compromises that the end result is going to be complained about (I mean, EVERYTHING is going to be complained about, this just inevitably becomes an easier target). It's too small. Not enough paint. Where's Roller. Why isn't it filled with money. For real I've had to put up with geniuses whining about why a Prime with trailer is a Leader class figure, as if the trailer were free to produce.
And ER Op is not a mold we've really seen sold on its own so it's hard to tell if it's a Voyager by itself with a big accessory (the Studio Series 2007/DOTM Op was sold as a Voyager solo), or the entire package is one budgeted bundle. But it's looking like the trailer just gets what's left of the budget and that's where all the cuts get made; it's not a millstone so much as... Leftovers? Leaving aside the trailer we might have gotten a bigger parts count for the cab Op, different proportions, no weird reused and glued Siege legs, accessories you didn't have to buy with a Selects figure, maybe some more height, and so on.
I don't mind what we got (I mostly shrug at it... It's just okay). I'm just tired of the thankless effort to produce something that's doomed to fall short of the mark anyway. As I alluded to, this was one of the things talked about with the Classics Op-- no trailer, trailer would have bumped it up a full size class, and so on. But a decade and a half later we're at a production economics point where even going up a size class results in a trailer that's pretty limited.
I'm just over it, I guess, especially since for space and storage it does become a millstone; if people can't live without one with all the bells and whistles, let them put their money where their mouth is.
(Tbh what I'm really sick of isn't trailers, it's fans complaining about trailers. Damn Scots fans, you ruined Scotland trailers.)