MMS is enabled in chatty 5.0~beta3, which is the latest version.
There has been a fair bit of work on suspend lately:
The slow charging is because the L5’s battery charging is currently limited to 5V x 1.6A, but I’m still hoping for future 9V or 12V charging. See my comments: Comparing the Librem 5 USA and PinePhone Beta | Random thoughts, conocimiento no conocido, yachay mana yachasqachu