Yes, mods would be great. But if you allow them please create a sane system to support them (make them easy to install and REMOVE). And please allow for multiple mods at the same time. If it's possible for two mods to have the same item, let us know…
I second the request to enable gathering from the SeaMoth without exiting it. Maybe add actuator arms in front to make it look like it can do it. They don't need to be animated at this point.