This is a list of features and fixes that Pixelorama would benefit from, and we are waiting from Godot.

Would be very helpful to have:

• Implement Drawable Textures godotengine/godot-proposals#7379. If I have understood correctly, this solution would be great for layer blending, layer FX and maybe even GPU-based brushes, without having to resort to compute shaders which are not available in the Compatibility renderer.
• Add StickyContainer godotengine/godot#114863
• Implement fallback to OpenGL 3 / Compatibility renderer when Vulkan is not supported godotengine/godot-proposals#8006. This would allow us to target Vulkan by default, in order to use features such as compute shaders if we need to, and devices that don't support Vulkan would just automatically fallback to OpenGL. It would be nice if Projects exported with the Compatibility renderer fail to run when using Vulkan godotengine/godot#80565 also gets fixed and made possible to target Vulkan, if the project is exported with OpenGL, in case OpenGL has better performance and we want it to be the default.
• A way to add maximum memory to the UndoRedo system.
• FoldableContainers are not resized when folded, and continue to handle gui input in the hidden areas. godotengine/godot#110834
• Structs would be nice so we can replace some dictionaries with something more statically typed. Add structs in GDScript godotengine/godot-proposals#7329
• Merge EditorFileDialog and FileDialog classes godotengine/godot-proposals#6831
• Native file dialogs for the Web platform would be nice, if possible. Allow use of native system file picker dialog on iOS and web godotengine/godot-proposals#1123
• Native file dialogs do not prevent input from propagating to main window godotengine/godot#85047
• Improve the performance of the GDScript VM godotengine/godot-proposals#6031. This might be enough to prevent us from using GDExtension for better performance.
• Alternatively, C# support for all platforms and better integration in the engine (no external text editor needed, no dedicated mono version needed) would allow us to use C# for certain algorithms to make them run faster.
• Improved clipboard functionality with support for multiple formats godotengine/godot-proposals#7899. The new clipboard_has/get_image() methods are nice, but not much of a use to us without a way to set an image to the clipboard.
• Add support for particle recording and playback godotengine/godot-proposals#7085. I could be wrong, but this might allow us to have a particle system that is "frozen" in time, which would work with the cel-based nature of Pixelorama's timeline.
• GLES2's return, even as a basic form, would be nice so older hardware can run Pixelorama again. https://twitter.com/RamatakInc/status/1710331907395764283

ThorVG wishlist:
ThorVG is the library that Godot uses to render SVG images. We can utilize the power of it, along with Image.load_svg_from_string() to create vector layers, without us having to create any rendering code.

• renderer: Support shape-rendering="crispEdges" to disable anti-aliasing in shapes thorvg/thorvg#1869. This is necessary for pixel art, as most of the time anti-aliasing on shapes is not desired.

Would be nice to have but not so important (stuff that we can do ourselves easily):

• Add the ability to group input actions godotengine/godot-proposals#4910. Just to get rid of some code from Keychain, and to make the input map in the project settings look more organized.
• Implement a code formatter for GDScript in the script editor godotengine/godot-proposals#3630. Would help with ensuring good code quality without having to download the gdtoolkit.
• Can't sample two different textures with different repeat and filter settings in a custom shader function godotengine/godot#75935 to avoid duplicate function definition in the SmearRotxel shader.
• Linux: Tablet pen pressure randomly jumps to 1 godotengine/godot#53033 so we can remove the workaround in Tools.gd.
• Allow passing a custom epsilon to is_equal_approx() and is_zero_approx() godotengine/godot-proposals#4425. Should allow for configurable color comparison (similarity option) for the Bucket tool's "Similar area" fill option.
• Camera2D disrupts low processor mode godotengine/godot#89514. If this gets fixed, we could most likely use Camera2D again.
• Add a method to get a locale's name in its native language godotengine/godot#78006
• I wouldn't complain if gif importing/exporting was added to Godot. 😅