Good work! Experimental progress is the way to go in the Linux world. As far as expanding the L5 most definitely. The L5 is pretty powerful!
With my experiments on phone imaging and restoration and just recently cloning to another L5 have been successful. Also using the phones 4g network as an access point for my Asus Sabai openvpn router via ethernet connection.
( How to Enable Hotspot and Tethering in PureOS on Your Librem 5 – Purism )
Anyway good luck and have fun!