Time to show some progress. Here are a few random shots.
Faces:
The main problem this model presents, other than a freaking amount of parts, is the fit: nothing fits as it should, everything needs heavy modifications!
Here is a shot of the base before said modifications:
Sakura's stand, modified because otherwise Sakura would be leaning too far back:
The inside of the base also needed some grinding, and later some puttying so that the "lid" could fit on the lower part:
And the clear part too got grounded quite heavily because no amount of heat I was able to produce would bend it to shape:
Fitting Berserker's hair was a problem as there was too little surface for glue, so I had to go for creative pinning:
Filling the gap between brow and hair:
And Saber and Berseker on the base (never mind the terrible colors, there's only so much a cell phone camera can do):