Would it be too complex to move it from app/server to offline windows/linux program? Map could be build on PC, converted and send to mower through local network.
This way from your perspective it may be almost only to create new interfaces and build program for PC?
For many (like me) that would be huge step to independent mower.
It is not just a matter of just moving things. Everything has to be implemented from scratch.
If you have ideas on how such an application could look like, please start a discussion in the repository for the local API: cloudless-garden/gardena-smart-local-api · Discussions · GitHub
When doing so, let us know which mower(s) you own as Gen1 and Gen2 devices are very different.