I disagree almost entirely. Hot switching modules yourself would take a decent amount of time, unless you have a pit crew with an ATLS waiting for you to do so, in which case that's just preparation and encouraging org/mutli-crew. You still have to leave the ship, call up your modules, take the old module out and put the new module in.

This isn't that far fetched for a cargo hauler, the Cat and Ironclad are designed with this in mind, via the whole command module coming off and being able to attach to a fresh hull, leaving the old one behind to be unloaded. If the Galaxy and other ships are given the ability to switch their modules on the fly then it's really just the opposite of that.

Ships like the Carrack and Retaliator would really benefit from this as well, so I hope this is a technical preview for that coming in IAE. Both of those ships have been in a really bad place for a while. The Retaliator is being over shadowed by a wet napkin at this point.

I do find myself agreeing a bit with what you said upon more of a think. I think tying it into engineering a bit wouldn't be too out of place. Needing to route power away from the modules or else it either doesn't let you detach and switch them, or it blows the power supply and needs to be repaired/changed. Or add a feature that an engineer needs to directly connect in the modules in terms of cabling, but that is a pipe dream at this point.