It's very annoying to try and exit a boat without shallow water from the alien biomes mod - and, in my opinion, a mod that isn't aiming for a full overhaul of the game (such as space exploration) shouldn't be soft-dependent on another mod's world generation feature to not be annoying to use.
So, I suggest adding a shallow landfill that lets you create your own shallow water in existing bodies of water without relying on alien biomes. This would also allow for creating your own spots to easily embark and disembark on boats.
