Il get straight to the point.
To be closer to professional use you need:
- Materials -asign materials to each part. Weight estimation is v important.
- Prefabs library - fastners and other relevant parts
- Quick spring, gear etc model defined by parameters.
- Export drawings to .dwg
- Others to come.
6 - add standard library based on fasteners, pipes, etc. Iso, din , ansi…
7 - implement ansys light stress analysis
8 - think well about standard components that can be purchased, they need to be an a standard library. I will not waste time on making a bolt or spring.
9- precision is a must for engineering. Look into relations, constraints.
10- add machining, welding steps,
If you can go with having the most intuitive interface, you could seriously compete with big names into 3d modeling if you off course implement the points above.
Also with the above implement you go from sketch ideas into production parts, assemblies.
These are just ideas if you wanna go big.