I couldn't agree with you more. I absolutely hated Batman Beyond when they were showing previews. (So of course I watched the movie pilot when it originally aired.)
I loved it....The show respected the source material and was even darker than the original animated series. I can't tell you how happy I was when Terry finally entered the original canon.
Having said that yes this show does sound awful. But Earth one Batman has a gun toting Alfred and it turned out to be really awesome.
Glen Murakami is an executive producer on this show so it shouldn't be that bad. (He also worked on Batman TAS and Batman Beyond)
All things Batman have been pretty good since Batman Begins. The Video games, The comics (Scott Snyder FTW), The movies. I doubt they are going to mess up now...
And Batman is such an important franchise to WB that I think they are going to be VERY careful with the next moves they make. Brave and The Bold was a great show as well. (Though you have to be well versed in the silver age Batman to understand why its awesome.) That show also had James Tucker who worked on past DCU shows. Now we did have "The Batman" but even that got better towards the end when Alan Burnett and Andrea Romano came in to work on the series.
Hey all things considered, it CAN NOT be worst than Ultimate Spider-man....ugh.