what if i actually put my designer brain to work and designed interlinking (pre-soldered) pcb modules for - ESP32 - LiPo - Serial so all could be used either temporarily in dev-stacks or soldered together
like the ESP32 could have a usb-c serial module during dev and when you build it in somewhere you swap it out for just a power module (or a power module with lipo)
biggest oof, again, is castellated holes would absolutely be best for modules like this, but too darn expensive