Hello guys,
I'm working on a prototype of a project with Teensy 4.0.

If the prototype is satisfactory we may decide to try making a version for the market.
Having said that, I would like to continue using all the Teensyduino Libs but on one of my own PCBs.

In practice therefore I would like to "melt" the teensy on the PCB of my product. Redesigning the teensy schema on the PCB of my product.
I imagine that this would allow me, for example, also to have a greater number of PINs, removing some expander.

Has anyone had a similar experience? What problems do you face?

Thanks so much