20 episodes per season.
That is, in a nutshell, the reason why Stargate feels different. 20 episodes allows for a more "season driven story arc" but it removes those 2+ extra episodes a run of 22 gives to pillow it with more content. The usual TV show season is 24 episodes, so Stargate's 22 was already cutting it by 2... and now at 20 a season it leaves you will a lot less time per season.
With 24 episodes (or even 22), one can have a very nice season arc and still have episodes that are very single-episode driven and would deal with the idea of exploration and discovery that has sort of been lost in these sweeping arcs dealing with the Ori or even the last season dealing with Anubis.
I really wish they would raise the season back to 22 or up it to 24.