I’d guess the vague idea is about something like a graphical configuration ui (web or local) and maybe even personal support writing dotfiles for you. I have my doubts that will generate enough revenue, but good luck.

Do you replace the power banks to keep them charged to 70%? Maybe also add some ham radios and walkie talkies to the stash.

Alternatively you could consider sshfs and open the file in a local editor.

There are multiple development projects for megawatt chargers with MCS plugs active in the EU, so I guess there will be some. There are already locations with multiple 300kW chargers, so replacing a few of them with a single megawatt charger should be possible.