[Feature Request] UI Improvement / Flexibility

[derei]

Hi @MrStahlfelge, and thank you for your efforts!

I'm working on a theme inspired by brick game devices (with the classic "square in square" pixel look), but I encountered some limitations. I'd like to suggest a few enhancements:

1. Padding Option – Could a setting be added to remove the 1px padding around blocks? It disrupts the theme, especially with a black background.
2. Custom Fonts – Could themes support custom fonts? I'd like to use a more retro/digital font.
3. Floating UI Elements – Would it be possible to make these repositionable?
   • Score info
   • Next brick preview
   • Held brick
4. Theming for Hold/Preview Blocks – In my theme, the falling bricks are black, the background is black, but the grid blocks are not. This makes the hold and preview pieces invisible (black on black). Could these blocks have separate theming options?
5. Play Area Walls - Option to enable all-around border, instead of only side walls (could be a theming feature).
6. D-Pad Hold Button Option – Could "hold" be assignable to the "Up" button, removing the dedicated hold button?
7. D-Pad Touch Area – The D-pad's active area could be slightly larger for better input registration.

Thanks for considering these suggestions!