WDW has opened a can of worms here. They really could have introduced this without publicizing it so loudly. They could have kept the resort door signs that they had and simply added a small disclaimer at the bottom. This hugely public announcement with signage changes, etc. has just let every potential criminal out there know how to potentially enter a resort room while it's being occupied. Before, no guest would have expected security to show up and, if they did, they may have taken more precautions regarding letting them in or not. Now, we all need to expect that security is showing up, so we have to decide how we are going to deal with it - call the "front desk"? deny entry and end up on the "Disney bad-guest" list? open the door to a potential criminal?
Unless someone hasn't left their room for 24 hours, there is zero need for a "security" check while a guest is in their room. RFID technology enables them to know when we are in our rooms and when we have left. We should not have to EXPECT security to show up while we are in there. It's the expectation now that may enable the criminal behavior, IMHO. You expect someone will show up, so you open the door.
There are all KINDS of schemes people have concocted to prey on tourists in Orlando and in the parks. The pizza flyers under resort doors. Calling rooms and telling people they need to pay off balances and they need cc info. People stealing strollers in the parks and selling them online. Various men exposing themselves to kids at pools or putting cell phones under bathroom dividers and taking pictures of children going to the bathroom (I'm not making this up). I wouldn't put it past anyone with a criminal inclination to try to take advantage of this new policy.
Based on 30+ stays at WDW resorts where I've seen time and time again that WDW really has difficulty fully and efficiently managing the behemoth resort they have become, I'm not confident they will implement this in a way that won't negatively impact guests who are simply trying to enjoy their resort rooms. I give WDW resorts a lot of slack. The capacity is high and the resorts are big. I realize when I book, I'm paying for location, a few perks and convenience. My room may have a few knicks and wear. Minor things may be out of place (I've had bigger issues, too, but they've, typically been dealt with depending on the resort). But this really goes a bit too far for me. I feel like with the amount of stress many of us go through to plan these trips - ADR's, touring plans, FP+ - actually staying in our rooms should be stress free and this is just adding another layer of stress onto the vacation. I am seriously considering staying offsite on our next trip.