UPDATE 5/28/19: After adding a total of 4 strategically placed Aeotec Range Extenders, I have zero reliability issues with all 3 of my Schlage BE469 Zwave Locks for more than a week straight.
Yesterday I decided to perform testing on these locks that I've previously described their locations/current repeaters/problems in the above posts. I decided to Exclude and remove the 2 problem locks and try to "pair in place" including them after adding the extenders.
One of the 2 I was successful and did not have to remove the lock from the door at all (which I had to previously) and it included with no issues at all. as well as adding lock codes from lock code manager from.
The other of the 2 (the farthest one away) I was "kinda" able to pair in place....Hubitat "found" the lock but apparently during the configure process something would not complete and the lock kept giving a red X, instead of the Green Check on the inclusion process, but HE DID actually "find" the device this was not possible at this location pre-extender adds. After bringing the lock closer to fully include I then put back in place and used lock code manager to create lock codes, and haven't had any communication issues since yesterday.
Side note there were a few zwave repairs ran during this process, and I will probably add at more repeaters until I get the ALL locks to pair in place, as these truly do amplify the zwave signal, so adding them can only help my mesh anyway. Prior to this testing I was in the camp of "I would never buy those as they don't perform any other function, and devices that do perform others repeat also" Camp.....After using I'm a strong believer that all zwave meshes should have these now.
@bobbyD, @patrick, @mike.maxwell Something to take note of. The lock that would not fully pair in place, during this process the "exclude" function of the hub would NOT reach the same distance that the "include" function did when it would find the device. Each time I had to bring the lock back by the hub to "exclude it" but the "include it" would find the device at it's location Also, each time I had this failure seldom could I just start trying to repeat the process and re-include again (at it's use location), WITHOUT first doing a hub shutdown and power cycle. The inclusion would fail everytime I tried to repeat the process, UNTIL I preformed the power cycle then everytime it would find the device during the inclusion process (at it's use location)
Something about after trying to pair these locks appear to really weaken the zwave radio signal from the hub, and power cycling the hub almost always fixes this.
Just my observation and test methods I felt like sharing, take them at your will