Whenever a sequel gets released to a series I like, I'm concerned it wouldn't be as good as previous entries. That'd being said, if Volition said they were making FS3, I would be at least cautiously optimistic and give it a chance.
The other thing people have mentioned here is "What if the community here got the rights to make FS3?"
I would definitely think FS3 would be technically possible to make...however that's not the main issue IMO. The issue is: could we even come to a consensus (even a simple majority) on what direction "our FS3" should/would take?
-"Transcend"...a lot of people love that campaign, but I can see a lot of people being upset if that's the direction FS3 would take since it doesn't feel like a normal FS campaign.
-A campaign like "Warzone" or "Inferno" or "The Aftermath: Reboot" might be the 'safest' route to take but there would be more than a few who would feel that it's not innovative enough and too 'explosion-y' and just like FS2 (some would say they want a 'normal' campaign but others would say future campaigns shouldn't be like retail FS2)
-As beloved as "Blue Planet" is, there would be some who wouldn't want that to be the direction FS3 should take (whether they think the Vishnan/Brahman/Shivan stuff is too 'out there' or they simply don't think the GTVA should be the antagonist in an official FS campaign)
FYI: I like the campaigns I've quoted. I'm just saying that, even if somehow HLP got FS rights, there would be disagreement on what route FS3 should take.