It seems that Jonas Quinn fans have launched a petition to get Jonas back on Stargate. He will be back in a guest shot in Season 7’s episode “Fall-Out”, which Corin wrote.

Returning, Dreylock, who I hear has been promoted to First Minister.

Seems a hugh vein of naquadah, that runs to the heart of the, once known planet of Kelowna, (now named Lagaria, since the three countries forged a fragile peace). By some process of a previous Goa’uld, the naquadah is transforming into naquadria. The only problem? Is that it’s very unstable, the deeper you go, the more pressure and heat is exerted on the naquadria. Too much and the naquadria will explode, taking out the nation of Kelowna, and creating a nuclear winter that will wipe the entire population of Lagaria.
Jonas contacts the SGC and of course our fab four are sent to see what they can do.

The idea of relocating them to safe, friendly world is nixed.
Talk of pulling a Jules Verne/ “Core”, by building a digging machine and some talk of Tok’ra tunnels.
Oh, and keep an eye out for Ba’al.