This is kinda cool, although for myself I kinda don't feel like some of these are even really necessary. Personally. But to be fair I don't even like the orbital abilities, but that's a different topic altogether.
1. Naval and Oceans [5t]
This would be really weird with t he games current frigates/cruisers/dreadnoughts. Unless they are going to be named like APC/MBT/SPG or something truly weird. lol.
2. Third faction [8t]
Yep, this is what I voted for. I wanna see what those pesky Martians have cooked up. Although I have a strong suspicion it'll basically be a Cybran-like faction. As the PHC are essentially the UEF and the Substrate are the Aeon. I'd love to be proven wrong however!
3. More robust modding [6t]
4. Replace some existing units with non-hover [3t]
I feel like this is a part of the games charm. Never had an RTS with hover armies before, likely won't have one ever again. It's unique! I'd vote against it if I could!
5. Metagame [4t]
Like conquer the galaxy kinda deal? Ehh, risk style maps of this in the past have always felt really tacked on to me, and the campaign for Planetary Annihilation didn't feel much better. Never played a clan wars style of this myself, but aren't they just skirmish battles anyway. Not my kinda thing.
6. Fortifcations [3t]
I could see the reworking of the current defences into something a little less, turrets in a field kind a thing, but aren't the defences in this game already a little too strong? I just... I dunno.
7. Transport units [2t]
Personally I'd hope for such units as to replace the orbital insertions altogether, but hey ho. Cool enough so long as the transports aren't tanky gods who ignore most AA.
8. More start-up options [2t]
Always good. Could be great if we could get some kind of scenario editor for people to make custom campaigns and such.
9. Visual pass to make look better [1t]
I really need to get a better PC.
10. Lower hardware requirements [3t]
It would be nice, you can play starcraft 2 on a toaster these days and lower settings are good for players who want more performance out of the game rather then visuals. Good for massive, if low res, battles.