I'm not as concerned as others seem to be about being a CW type of show. My understanding is that JMS expects to have more creative control over a show than is customary. I'm assuming that that is just part of the deal. Obviously I don't know.
I'm mildly concerned that my expectations will be unrealistically high. I have such fond memories of B5:TOS when it originally aired, and it held up when I watched it all again two years ago. There was so much that was new for the time: serialized story arc, Lurkers Guide, JMS on usenet, decent action/CGI. Those are just a given in 2021.
My biggest concern is that I don't want another Crusade situation (one or less and done). I don't think it's a given that it'll be a ratings hit (I can hope though). JMS tweeted something about having some B5 fans at the CW, and that's great. But executives move around and in the end it's about money. If the network fan is the guy at the top and it's a Jeff Bezos type situation, then that'll work.
I noticed that JMS tweeted something about picking network vs steaming, but I didn't understand what he was saying.