Is this for your immediate family only? No locks. If you lock something, just put a lock on the toilet/shower area. If this is for visiting extended family, then maybe locks from bathroom to bedroom... But, I am still inclined to say no locks (just passage).

As for the pocket door that is "not a pocket door", I just finished installing two in my house. The only requirement is that the same space is required along the wall as the door opening. Thus, a 38" door requires at least 38" of wall space to open it. Also will requires perhaps 3" at top for track & trim to cover track. Hardware is available at "Stanley" and costs less than $30. Just type in Pocket door Hdw. and that should take you to the directory. One of my doors is a simple 24' slab that replaced a door that swung into the bathroom and back against the wall. The problem was nothing could be in that area as to interfear with the opening and closing. Now we can utilize that space with a small table. The new door simply slides along the wall taking up about two inches of wall space. My other door just seems to go wherever we go. It has been in three states and always been used to replace inconvienient bathroom swinging doors. It is more of a decorative type door containing a piece of wire glass with a stincle on the glass. It slides along the wall and replaces the swinging door that hid the pot when open. Now the pot is accessable without having to step around the door. Depending on how fancy you want the door, costs could be less than 75 bucks using a simple hollow core slab. For a 24" door I simply cut a piece of pine about 2"1/2 wide, 48" long, painted and installed it using a pocket hole and screwed it into the wall studs. Attached the track, installed the rollers, nailed on a trim piece(also pre painted) about three inched wide to cover the track and installed the door. Entire installation took less than thirty minutes. These doors can add a little additional design to a previous blah swinging door.

lynnsae- Not clear to my why you would want a lock that poses a safety issue in an emergency with a child or an elderly person, or just anyone who might have a fall. I suggest that you get a lock that still allows it to be unlocking from the outside, but just not such an easy-to-use design as the one you showed. This is what I have on my bathroom pocket doors: Schlage pocket door lock It's simple, inexpensive, and never needs adjusting (unlike many pocket door locks that act up with seasonal changes). It's mounted on the face of the door and is hidden when the door is open. When the door is fully closed you push on it, and it pops out: it's mounted immediately next to the jamb where the pocket is so that it butts into the door jamb if anyone tries to slide the door open. The emergency release is a tiny hole on the outside of the door that allows you to stick something like a paperclip wire in and pop the lock into the open position. Here's how it installs: Lock install

Check on an appraisers forum to see if there would be any difference in value. Unless you are getting cash for the sale or a large down payment from the buyer the appraisal will be the determining factor if you actually get more at the sale. If you do this change, do it for yourself and not for resale. If you do this change, make sure you don't make the current floorplan dysfunctional as that will take value away. If you are using the exact same square footage and not adding any, then it is doubtful that your home would add value but you would need to get twin sales in the area to see how much, if anything, is added to the value. It may open up the buyer pool and sell more quickly though. As the others mentioned consulting with a couple of Realtors in your area would help you get a handle on the current market.