To be honest, the trailer looks like fallout 4 in space.

I mean, I would definitely get Fallout 4 in space.

Frankly, I would buy more Fallout 4 expansion packs if Bethesda would make them.

My limiting factor isn't the engine, but rather than Bethesda decided to go off and do other things that were neither Fallout 4 nor Fallout 5.