The most advanced races had the technology to stop the symbiote from taking over, but I don't know of anything that would make them immune in the first place. Of course, being compatible with the host would require that the symbiotes be descended from a queen with a sample of their DNA, which could be harder to get from a Asexual race like the Asgard. Without being tailored for the human body and being acclimated to it though incubation in a Jaffa there used to only be a 50% chance that a symbiote could take over a human host with out both of them dieing.
Thor proved himself capable of taking over an entire ship with his mind, I think an Asgard brain would therefore be impossible for a Goa'uld to seize. They could take an Asgard body, but not one that already had an Asgard in it.
DNA could be taken in ways other than sex. Just because Hathor was a little on the slutty side - a good thing in a woman or a 10,000 year old Egyptian goddess - doesn't mean that's the only way a Goa'uld could obtain DNA. I doubt the queen that aligned with Anubis to produce Kull warriors nailed one of them beforehand. And I always wondered if Goa'uld used Jaffa-type incubation in their previous hosts.
It is actually pretty widely believed (in FanFics at least) that Ra had taken an Asgard host before coming to earth. The Alien shown in the original movie would then be the old host instead of the symbiote. It actually does look somewhat across between a modern Asgard and the Asgard from 30,000 years ago (a little closer to the modern, which makes it seem quite a reasonable way fr the Asgard to have looked 10,000 years ago when the Goa'uld first rose to power), more than it looks like an Unas at least. It is often thought that Ra's position as supreme system lord came from technological knowledge he gleamed from this host, but that the Asgard body was not fully compatible with the symbiote. By the time he found Earth it was rejecting him and he needed a new host.
Fascinating, I hadn't heard that theory. I always thought the host looked like a stunted Unas myself, which would fit with Ra's talk about a disease wiping out the Goa'uld. Then again, Ra was a known liar, so it wouldn't be surprising if he fabricated the disease story entirely.
Ra taking an Asgard host would explain both his dominance of the Goa'uld, and the Goa'uld's stunningly quick rise to power. They are said to have stolen their technology from other races, and there is mention of species being used after the Unas and before Humans, but it's never revealed which. Ra managing to snag an unsuspecting Asgard explorer would go a long way towards describing how the Goa'uld progressed from a relatively unadvanced culture on the Unas homeworld to an interstellar empire almost overnight.
I believe that Heru-ur's power was explained by him being the son of Ra, and having inherited most of Ra's forces when SG1 killed the supreme system lord.
Yes, he was the son of Ra and Hathor. WIth Ra dead, he'd have inherited Ra's empire, but not his claim to hegemony of the Goa'uld, which went to Kronus. Kronus was never declared Supreme System Lord though, and Ra did seem to have been declining in power. He had lost several wars in the few hundred years prior to his death.
There is no way the Furlings are Ewok-like. I would loose all respect for the show if they did something like that, in more than just an imaginary episode 200 sequence that is. (By the way, I hated 200.) Having such a cute sounding name necessitates being a rather tough and uncute race, imho. I tend to think that the Furlings should have no fur at all, but be reptilian/insectoid. The Re'tu or the Gadmeer seem like possible candidates.
I liked
200 as a stand-alone episode. Same as
Wormhole X-Treme, the 100th episode. I liked the amount of in-jokes - the
Farscape scene had me in hysterics - and the fact that you could tell the actors were just having fun, not taking things in the least bit seriously. A terrible way to run a show, but okay every once in a while. If they'd gone another 5 seasons, I'd have paid good money to see episode 300: "This is madness!" "No! This is
STARGATE!"
I tend to agree that the Furlings should be furless, or at least no more furry than normal. I don't think the Retu or Gadmeer qualify though. They're simply not advanced enough. The Retu couldn't defend themselves from the Goa'uld, and the Gadmeer were forced to abandon their own homeworld to invaders. I don't see the Furlings being such pushovers. Even if the Furlings lost a war to the Goa'uld, it would not be pretty, and wouldn't result in the situation the Retu and Gadmeer were in.
The Nox and Asgard were more than capable of going toe-to-toe with any enemy that came along, so the Furlings should have been likewise. I always wanted the Asgard to be involved in a massive interstellar war. Asgard vs Ori would be sweet, because I always found Asgard technology to actually surpass Ori or Ancient technology in the field of weaponry. I always wanted that explored, maybe a revelation that the Ancients weren't all-powerful as they claimed, and only had the knowledge they had upon Ascension.
Regarding the Furlings, I've always thought a cool storyline would be a race impersonating them. Since the Tauri don't know what Furlings look like, it would be a good way of a species gaining access to the Asgard database. They agree to help the Fifth Race out, have some advanced technology and seem like friendly chaps, then stab the Tauri in the back and steal the technology, possibly eliminating the Nox or another powerful species in the process, just to remove a potential rival.