[TRACKER] Potential Development Halting Issues.

I have compiled a list of issues which might have a big impact on, or halt the development of a game. These are either issues that look bad or issues that several people have complained about and ran into issues completing a game with. This was made in light of mafiesto's intention to have at least a few commercial games on steam/other platforms, and consoles made with the engine.

Model importing issues:
- [x] [Some messy geometry on importing](https://github.com/FlaxEngine/FlaxEngine/issues/1660)
- [General model importing concerns](https://github.com/FlaxEngine/FlaxEngine/issues/1973), simply to be reviewed

Lack of non-destructive workflow (for review and further discussion):
- [Models/Model prefabs should keep track of existing sub-assets.](https://github.com/FlaxEngine/FlaxEngine/issues/2110)
- [Inheritance of import settings](https://github.com/FlaxEngine/FlaxEngine/issues/2114)
- [x] [Generally related issue](https://github.com/FlaxEngine/FlaxEngine/issues/426)

Animation Issues:
- [ ] [Animation retargetting issue](https://github.com/FlaxEngine/FlaxEngine/issues/1517)
- [x] [Animation graph/Skeletons aren't synced with game code](https://github.com/FlaxEngine/FlaxEngine/issues/2413)

Other issues:
- [x] [OpenAL quality issue](https://github.com/FlaxEngine/FlaxEngine/issues/1032)
- [x] [DDGI and SDF issue](https://github.com/FlaxEngine/FlaxEngine/issues/1614)
- [x] Shadow rendering is more expensive than it should be according to mafi, and should be cached or smth. I noticed this when trying to shadow a large area without having blinding obvious shadows missing close to the camera.
- [ ] Mouse inputs are sometimes unreliable according to several reports
- [ ] [Several Complaints about using the terrain system](https://forum.flaxengine.com/t/terrain-issues-with-details-1-7-6/1
- [ ] Lightmap baking does not work, increasing the importance that DDGI work nicely.
- [ ] [(Linux Specific) Major editor UI issues](https://github.com/FlaxEngine/FlaxEngine/issues/1699)