Man-oh-man. For all the stealther-hate going on here, you all sure did a great job stealing this thread from its actual topic!
Looking over the responses again, it seems pretty clear that most posters are not in support of applications for rentals, but if anyone has anything to add the topic is open.
To the problem of rental scarcity, I support Sinthepie's idea of adding more rentals which can't be customised permanently. You can find that part of the discussion here:
Honestly I think a decent solution would be to maybe add a few barebones rentals and not make them customizable. Make the rentals fit for the area they are in. Does it make sense that the renters would want to customize? Yes. But it also makes it a hassle for the dm that has to customize it. Nothing can stop a player faction that has the chance to own properties from owning them, even if it is through applications. Make them simple, make them usable and decent. Maybe they could be small enough that even if you did customize it, because of its size you couldn't add much OR like the rooms in Governor's Hotel where you can rent them, but you don't have the need to change them because of how they are.
Then I would propose a one rental per real player rule to prevent hoarding these alongside the event/faction ones. Of course, you could have keys to rentals owned by other players. In no uncertain terms, I think there should be too many rentals for people to try and hoard them, just as no one group can currently farm every dungeon spawn or resource on the server.
I think the rest of the discussion regarding how to break into rentals is relevant even if it's contentious. We probably don't need to change the way that locking doors works in rentals and inns (though I would like to see the system overhauled and made more robust if the server can handle it) as much as we need more rooms for people to feel like they can get their own fair shot at having them, in my opinion, and again, I don't believe the Tenements suits the need, as it is too out of the way and it's basically inside a dungeon. The same exact idea applied elsewhere in the right place(s) would be really very popular, I'm certain of that much. The truth is, most factions, both player-made
and officially supported, only host 3-4 concurrent players most days. So a single tile room is ample space for a private conversation. Give them two tiles and they can do a little more temporary furnishing that they refresh a few times a week with carpentry, and now ten players can be comfortably hosted all at once. Again, I'm not a dev, just floating that idea to see how others respond, but we shouldn't expect them to suddenly do a whole ton of work if they consider this a non-issue at the moment (no dev reply atm).