I wouldn't care if they copied the style. Some really good shit jas come outta copying another style: Deadpool, Moonknight, Shazaam, fucking Goku is a straight rip off of Supermans origin, the list goes on.
Watchmen was, from start to finish, designed to be an enclosed story with a dubious ending. Expanding upon it just dimishes it. The whole style and premise, however, I can 100% get behind that being used somewhere else.
Some stories just shouldn't be touched, and Watchmen is one of the. DC is already fucking it up and this shit is exacerbating the problem. Alan Moore can be a right ass, but he IS one of the best writers for comics alive right now. That's an earned rep that should be respected.