All we can do is wait for ME4, hope it doesn't suck and that it catches the attention of any brand out there to make figures, I only wish for 3 above anyone else, Shepard, Garrus and Liara, any scale would do.
Unfortunately for us Mass Effect isn't that popular in China but I would've hoped DAM/VTS or even SooSoo would've taken a stab at making a new Shepard by now, especially DAM/VTS since they've done stuff like Rico from Starship Troopers and the characters from a sci-fi movie called The Wandering Earth and of course they have a lot of experience with military figures, SooSoo is more likely to listen but less likely to make it-
The whole situation really sucks, the end of the third game left a big stain in the legacy of the original trilogy and Andromeda made things worse, I hope ME4 can give us the continuation we deserve and hopefully some new figures along with it.
Those are my Top 3 as well. I'd love to have all the big names of the crew, but that's a pipe dream, money, space and availability wise. Dam's my preferred official company for now, as they're doing good work with their AC & Godfather figures. Imagine even a fraction of this as a display:
But yeah, it all comes down to ME4 being a hit and putting the franchise back on the map.