Honest to Bog, I got closest to actually buying these UE4 assets yesterday (as in, I had already clicked "buy" on one of the setpieces).
Hell, I just have to forget about the FPS and go with a side-scroller instead, because it has a pretty damn awesome blueprint system already available (with da TAKING COVER and everything):
https://www.unrealengine.com/marketplace/side-scroller-shooter-kit
But... there still aren't any proper character models in there. Unless I wanted to make a swords & orcs type of a fantasy thing, which I don't.
ALL THIS OUTRAGES ME.
(Then again, even if I had bought them yesterday, I'd have paid too much for some o' them because apparently a lot of assets are on sale today. Boh!)