Welcome!

Hi,

i've no idea how to manually build the core for android, i think you need to read the jni files with android studio ? You should ask for help on the libretro forum.
What's wrong with controller config for MK2 ? If the default config doesn't make sense that's something i can look into.

To really replace the logo we need the logo, and icon, an (at a guess) 640x480px main screen, and something to go in the about box that's all better than what we already have.  Plus they would have to have the same F shape as the current one, I would assume. At one point in the distant past jan_klaassen gave me a copy of the original PSD files he used to make the current ones but I seem to have smashed that hard drive to pieces 

Yes, the "F" in the V2 logo refers to the "old logo" style, but I prefer the uniformity (F and B use the same font) of V1 release.

We could also change the B to match the v2 F.

Good logos usually fit in a square or circle. That phoenix almost does (except for his head that sticks out a bit too much). We could have 2 variants of the logo, a big one with text (like the ones shown here), and a smaller one that would be a square / round icon only (with just the "F" inside, like the old logo).

Similar to the attached one!

Anyway, v2 has a better font that is reminiscent of the old logo, but v1 was cleaner / less noisy.

Yes, the "F" in the V2 logo refers to the "old logo" style, but I prefer the uniformity (F and B use the same font) of V1 release.

Personally I prefer the V1... or rather the following "mix"...