Set in a new city, with new characters, and A LOT more new vehicles and aircraft to drive and fly?

Sure, why not.
Although I'd like them to tone down the silliness just a tad.

Yeah I kind of want the silliness toned down just a little bit as well.

Nope, absolutely not - at least not for now. I'd rather want them to make Freespace 3, even though it's very unlikely as Interplay owns the IP.

Not really.

Let them regain control of the FreeSpace licence again an make some good spacecombat game.
I found Saints Row always kind of meh (just like GTA by the way), while FreeSpace was fuqing awesome.

Was coming in here to say this myself.

this

Another Saints Row would be awesome, but a new Summoner would be amazing as well.

If anything, I want them to crank it up even more. GTA IV was boring enough to last me a lifetime.

I definitely want more Saints Row, regardless of whether or not it keeps or loses the silliness. If there is a Saints Row 5 then Female Voice 2 (aka vaguely Russian voice) better make a comeback, that's my demand as a fan!

Yes. I would love Saints Row V.

Just because i wanna see what Volition have under their sleeves.

I want good developers to have creative freedom to develop what they want to develop and not more sequels and remakes.

So actually I'd prefer Volition did something new than just make Saints Row V.

I'm excited for what Rocksteady's next project is going to be.

Actually, I do have one other wish for Saints Row 5. I'd want it to be set in a new city because I'm sick of Steelport. Not that I hate Steelport, but I do think it's probably the least exciting city I've seen an open world game set in.

Still haven't played any of the Saint's Row games yet but I've got them all on my wishlist so I'll probably pick them up on a super mega sale at some point. If they've got a successful franchise going though I can't see why they wouldn't go ahead and make another sequel.

For the heck of it I made a wishlist, see how much demand there is.

Search for it.