Very sad;
I am sure there are weirdo perfectionists in the hobby who browbeat anything less than absolute perfection, but there is a line somewhere and it seems to get crossed too often with these reproductions.
For the Shadow Playfield, I can see being disappointed in the blue, but if I was replacing a blown out original I would be happy to have it.
For the Monster bash, if you can post picks of it being lit up from behind it would be helpful. Even though the flaws look awful when the playfield is naked "probably" things would not be noticeable if installed. Unless it is so off the lights bleed through the inserts...
I installed a "budget" misaligned playfield into my rat rod Flash Gordon rebuild and you can't tell. One color was shifted over the rest, and there were some other imperfections. When the game is populated it is not the first, second or even 10th thing a normal person would notice. But the price reflected this; for ~$300 or whatever I paid I thought what the heck! It didn't make sense to pay triple or more for a "perfect" one. And taking a step back, when you looked at the blown out playfield I started with my "imperfect" playfield was a definite upgrade.
That MB playfield could help a game out there somewhere, but yest disappointing for the price. And the customer service is just...