Have you tried using NB’s SuperStructure LME as a base for a brown ale, porter, or stout?
I’m thinking it would be fun to have a couple of short brew day recipes (no mini-mash, short steep, 15 minute boil) and perhaps the SuperStructure LME would add some variety to the base recipe.
You could certainly use it. As you mentioned you would have to steep to reach your desired SRM. But 15 min boil? Assuming that you’ll add enough hops to balance it out? FWIW, I did a 30 min boil and wasn’t impressed. Beer never cleared and the flavor stability was all off. YMMV.