The Marshall is available, and the article discusses how it requires one of the two Heroes books to fully use. Does that make the Marshal legal for this season? I'm really curious and looking forward to the possibility of playing one.
Vancian magic needs to be nuked from orbit. It's the only way to be sure it will never appear in the core for Next.
Vancian magic is purely for nostalgia. Nostalgia doesn't make bad mechanics good.