I'd say that you've found the same thing as the rest of us. Overall, quality is pretty good, but there are a few oddities here and there.
I'd also say that this approach is similar across the industry for trailers in this price range.
For the most part, I think that the manufacturers' philosophy is to do a decent job and then leave any fit-n-finish issues for the dealerships to address through warranty. And, with issues like the sloppy work you've pointed out, maybe 3 out of 10 people would find it and would expend the effort to get it fixed. That's 7 out of 10 who wouldn't bother - and that's a good chunk of change left in Forest River's pocket.
But, that's just me being pragmatic.
If you do take it back to your dealer to be fixed, ask them how they'll do it first. If its anything less than replacing that ceiling tile (or whatever its called) and relocating the box, I'd suggest pushing it all the way up to Forest River if necessary for an appropriate fix.