[Trexmaster]

Like it or not, GMs have the final say in situations of conflict between players. Someone has to, or we'd get nowhere.

If the logic of the request is silly, it'll likely be denied, and I would suspect the GMs are able to differentiate between a legitimate IC explanation behind a request for entry and people trying to abuse the system to grief people.

I don't see anything inherently wrong with GMs being able to say 'hey, unlock your doors' when IC dictates.

You can mechanically lock a house off from all players indefinitely, and you can instantly boot or even totally bar them, but roleplay takes precedence over mechanics. To refuse all access ICly even if they have the means to enter is godmodding. By the same token, the invaders should not always succeed either. This is what the GMs are there for--to decide how things go in such cases of conflict where one or both sides enter a stalemate and refuse to make a compromise that both sides are happy with.

As for issues with communal storage, it's a risk you'll have to take if you want an ICly and OOCly sharable storage. RP is RP, and this can involve theft. If you want complete security, you'll have to store things in the bank and pass them around as needed.

If it's any consolation, cases of people demanding entry into locked doors for the sole purpose of looting storage containers are rare. I don't doubt a GM would be lenient if the victim wished to keep their mechanical items if they weren't the crux of the RP.