Well, here is my two cents:
It's quite clear that the writters were tired of the same old style of writting. And, I can understand that. I can't really be too hard on them in some aspects of all this because they did however, create the shows that I love. While it is widely known that, they sure could have done better with some of the writting they did for SG-1/SGA, all in all those two shows were a success in my opinion. We all make mistakes. I'll be the first to admit that I do. For example: When I first heard about SGA being cancelled I was furious! I got on the forums and just flat out raged.
Now that I'm calmed down quite a bit, I'm able to think more rationally. However, I'm still furious. Point is I can forgive them. But in this forgiveness, I'd like for them to see that they can not just do what they want, and try to force it upon people. From what I've seen is they were saying that they know what they did was good, and we all just needed to get past SG-1/SGA and see that.
WRONG ANSWER PAL!!!
While It does pain me greatly to say this. Stargate Universe was however indeed a good show...for those that liked it. Which we can all now plainly see were few and far between. Obviously not enough to keep the show going. I'm quite suprised it made it two seasons. I'm thinking they had them all filmed already, in advance. Is why they went ahead and aired them. I'm sure the plug had been pulled on it long before we ever knew about it.
So, here is the way I see that it all went down. The writers for Stargate, were tired of their job. They wanted to try some different techniques. So, they canned SGA, around the same time that BSG got canned. Appearently they thought that the Stargate fans were "Static" and would "Adept" to what ever they decided to do with the show. In other words, I guess they thought we would like SGU, just because it has the word "Stargate" in it. Then all the while, they were hoping to pick up a good portion of the viewers from BSG. Which, Obviously that plan failed misserably.
This reminds me of when Coke tried to change their formula. It really did not go so well for them. In fact that had to "Reboot" the original "Classic" Coke, in order to save face.
As, sad as it makes me, I doubt we will see a reboot of SGA.
I think what they should have done if they were tired of the writing they were doing. They should have let someone else have a stab at keeping it going. While they worked on something entirely different. If they would just make a whole new show, and give it that theme, it would have done a lot better. It could have had a chance to develop it's own fan base, instead of trying to supress an already existing one, that likes something totally different. It's like trying to sell a Toyota to someone that only likes Cheverlot. Your just barking up the wrong tree, this is all common sense.
There is an old saying, if it ain't broke don't fix it. And yes, SGA was going a little down hill, especially in season 5. They should have got some fresh new writers, and took a break. Is what they should have done.
All I know is I miss Stargate Atlantis. I'd really like to have it back. But, I know I won't ever see it again.
As far as how many bridges did they burn? It's really hard for me to say that, as I really don't have all the access to all the numbers and statistics that they do at my disposal. If I was a bet'ing man, I'd say that they have pretty much cause a lot of the SG-1/SGA fans to turn on them. I'm not really sure that people would watch SGA if they brought it back at this point, just because of the poor/cocky attitude they had about their work, that a lot of the fans did not approve of.
I'd say they did an effictive job at killing off the Stargate Genre.
I do however think if they were to sell the rights of Stargate Franchise to someone else, that it might stand a chance of being rebooted in the future.
The writers of FireFly could probably do some great things with it, I would imagine. I don't know who the writers for firefly are, but, from the shows I've been watching of FireFly on Hulu, the writting is a lot like that in Stargate. Serious, Action, Comedy. The writting for FireFly is probably better than that of Stargate actually.
So, if they will let it go, let someone else have a shot at it. I think it could do well again. But I think the Drama should stay in BSG, or they should create a whole new show to put their drama in. I mean surely they are smart enough to create a whole new franchise?
It would be nice if someone like BioWare made a good mmorpg for Stargate, that way I could get my stargate fix.