I loved SGU.

The main advantage of a fictional world spanning through the entire universe is that there are infinite possible stories, without the need for a reboot.

They could do a story about the rise of the first goauld system lord, and how it managed to rise to power.

They could talk about the descendants of unas, and how they managed to create a globalized technological civilisation, possibly even meeting the great great great grandchildren of the civilisation seeded by the crew of destiny in the time travelling incident, long after the earth has became a barren wasteland...

Or something about a jaffa archeologist on chulak, discovering an ancient burrial ground, but all the corpses has a wierd worm in their stomach. The plot thickens when they detect a substance known as tretonin, a common dietaty supplement, inside the worm, but nobody takes the discovery seriously, making the jaffa with his outlandish hypothesies an outcast...

Or about a shortage of the artificial food supply in a highly spiritual tribe of wraith, hindering their long and complicated way to ascension...

The possibilities are endless, and I'm sure someone with an actual talent could come up with tons of better ideas.

Someday we'll get that planned SGU conclusion. Someday...