[TRACKER] Navigation Roadmap

[DarkKilauea]

Here is a list of the major items the navigation team is aiming to tackle in the 4.x time frame. It will not contain every issue we plan to fix or enhancement we want to add, but is intended to communicate major changes and reworks we have planned.

### 4.4
- [ ] https://github.com/godotengine/godot-proposals/issues/8939
- [ ] https://github.com/godotengine/godot-proposals/issues/7208

### 4.3
- [ ] https://github.com/godotengine/godot/pull/90434
- [ ] https://github.com/godotengine/godot/pull/75098
- [ ] https://github.com/godotengine/godot/pull/89034
- [ ] https://github.com/godotengine/godot/pull/88221
- [ ] https://github.com/godotengine/godot/pull/87961
- [ ] https://github.com/godotengine/godot/pull/87378
- [ ] https://github.com/godotengine/godot/pull/88047
- [ ] https://github.com/godotengine/godot/pull/82561

### 4.2
- [ ] #80796
- [ ] #79643 

### 4.1
- [ ] #69988

### 4.x
- [ ] https://github.com/godotengine/godot-proposals/issues/5635
- [ ] https://github.com/godotengine/godot-proposals/issues/5542
- [ ] #66891
- [ ] #69881
- [ ] https://github.com/godotengine/godot-proposals/issues/6317
- [ ] https://github.com/godotengine/godot-proposals/issues/5116
- [ ] https://github.com/godotengine/godot-proposals/issues/7504

Anything in the 4.x bucket may be moved up if the work is completed and accepted in time.

Plans are subject to change, please let us know if there is something major that you see missing from the list. Please make sure that you have an open proposal for any such changes.

[Scony]

• [x] Minor TODO: https://github.com/godotengine/godot/pull/79485#discussion_r1264402385

[MJacred]

Something major missing: https://github.com/godotengine/godot-proposals/issues/5116

[Scony]

• [x] NavigationRegion3D has no is_baking() method that was overlooked - confirmed by @smix8 - I'll be implementing this soon

[Scony]

• [ ] Replacing NavigationRegion[23]D::bake_navigation_mesh(false) with NavigationServer3D.parse_source_geometry_data and NavigationServer3D.bake_from_source_geometry_data requires extra NavigationServer3D.region_set_navigation_mesh call in order to sync up changes - that should be unified.

[Scony]

• [x] Adding append=false parameter to NavigationServer3D.parse_source_geometry_data() so that data can be appended to existing geometry resource

[Scony]

• [x] https://github.com/godotengine/godot/pull/89034#discussion_r1518555324

[Scony]

• [ ] https://github.com/godotengine/godot/pull/85965#issuecomment-2323355234