I haven't fell in love with any HG kits since HGUC Byarlant Custom, these are definitely in my buy list

if there's going to be a MG Loto, the size will be cute

even in Macross Universe, the size between VF-1 and newer VFs like 19 and 25 are significant
1/72 VF-25 is about the size of 1/60 VF-1
and the size follows the trend of the era they were designed in

It's like F16 vs F14

well... because Nu & Sazabi's special finish version aren't limited, released as normal release, so its legit

so many gimmicks for just the lower leg only, looks like its well worth the price

nah, the cockpit 'ball' circled in blue

due to financial constraints, I've vowed to stay away from gunpla purchases for some time, but now Sazabi Ver. Ka is gonna break that vow before I even started...

the fighter and gerwalk modes proportions are definitely spot on, extremely anime accurate
but the battroid mode proportions is kinda weird, especially the legs, kinda too long

not that I won't be buying it, I've been waiting for an affordable fully transformable kit for along time d
other than the weird legs length, overall it's pretty detailed, and articulated too

Tactical Arms III

next is Metal Build

looks like RF SF's advanced MS joint will have 2 tones of gold

my verdict of your list:
-RG Sinanju, plausible, but not in near future, I doubt they will make it before Unicorn

-RG Unicorn, I'd say Bandai wishes greatly to make this, would boost their sales, but I doubt it can be done anytime soon. They're having hard time with a PG Unicorn, RG Unicorn would be harder

-RG Nu, highly plausible, since Nu itself isn't very complicated, it can be done easily. Question is the funnels, but since they can make RG SF even though the dragoon system is so fragile and complicated, Nu's funnels would be piece of cake

-RG Exia, extremely plausible, since Exia is as simple as RX-78-2, and no heavy backpack, plus it's popular, lastly 00 HD is being aired now, RG Exia is in

-RG 00R, if they make Exia, this will definitely follow. Probably separate into 2 RGs, 1 00 Gundam, another 0 Raiser

-RG Impulse, I'd say it has the same chances as Infinite Justice, popular enough to make one, but not that hot to be a must make model, either hit or miss

-RG Qant, if Exia and 00R are made, then this has a chance, if not, zero

-0 Gundam, close to 0, so far the only non main MS RG is Zaku II, means chances are already low. If they do make non main MS RG, they'll pick one from UC or Seed first, this decrease the chance even further

RX-178 MkII, Zeta, & GP01 already broke the 18m barrier, it shows that >18 height isn't an issue for RG
the issue here is implementing the transformation mechanism while maintaining the price of RG at the same time

you are not alone... Savior and Akatsuki is the top 2 on the wishlist for Seed Destiny MG for majority people

even 24m tall Gundam wouldn't pose a problem for RG if it's simple, the plastic used for the height increase I'd say is equivalent or less than the plastic used for large backpacks like Freedom and Justice
the major problem with Unicorn is still the transformation mechanism

because there's just to many MSes to make into MG at that time, plus I'm glad they didn't make one using the old Strike frame

like I said
Bandai wouldn't take the risk of raging fans by releasing RG like that, fans would rage that it ain't 'Real' Grade enough

I still don't get why people complaining about the nub marks in Akatsuki??
I used to have the NG 1/100 and the nub marks on the gold plated parts are nearly non-existent
Bandai had did a job applying their undergate technology with the kit, I don't see why they can't implement the same thing if they ever make an MG of it

RG Strike Freedom's box art

sanding is the most perfect way to remove nubs
to remove scratch marks you need to use multi grit sandpaper
eg. 800 -> 1200 -> 2000
then after that you need to polish it, there's 2 ways
either use polishing compound(like cream) on cloth to rub the surface
or use polishing paper or sticks, eg. fingernails ploishing sticks

only downside is time consuming, it requires lots of patience, but the outcome is perfect