- Can't be made independent of each other right? (MasterB dependent on power from FamilyR?)
Correct, not without either smart switches or adding new wires.
- Can I at least remove the flick/toggle feature so MasterB never turns off FamilyR Ring?
Unless there is a need for a switch at MasterB for the floodlights (which I doubt), you can remove the switch and connect the wires inside the box and put on a blank plate. (Or really confuse the next owner by connecting the wires but leaving the disconnected switch in the box.)
The three wires at MasterB are 2 travelers (coming from FamilyR) and 1 switched hot. You could connect them all together, but preferred would be to figure out which traveler you really want to use (based on FamilyR switch position) and connect that to the switched hot, and cap the other traveler on both ends (MasterB and FamilyR). See below for more details.
- Should I leave interior wiring alone and just hook up my new exterior fixtures since THAT is simple? Then flip/set the switches until I find them "always on" and use tape so no one touches them.
You could do that. I'd probably go with: leave one switch in place and put a cover over it to prevent nuisance trips (easy for toggle switches, like this one from Amazon, but some options for Decora too), remove the other switch.
- Why is there a wire between the FamilyR switch and the adjacent switch which is a FamilyR interior light?
Normally (but can't tell 100% sure from the picture) that is to chain power between devices. Perfectly normal.
- Can I wire the MasterB to always be hot and remove the switch? FOUR GANG BOX so I don't know how to put a blank over that and still use the other 3 switches.
Yes. For example, Kyle Switch Plates has just about every combination you can imagine.
WARNING: Possible Major Problem
Based on the picture of MasterR, there appears to be a major problem with the existing wiring. There is a 2 wire cable (wire counts in cables ignore ground) providing the travelers for the switch. They are marked with blue tape (reasonable) in FamilyR. But they are either (hard to tell in the pictures) two blacks from separate cables (no good - all travelers must be in the same cable) or black and white from one cable (OK) with a black by itself as switched hot to the lights (which I think is the case based on the red tape in MasterB). The problem is that you have to have the currents balance between the wires in a cable (or conduit, for that matter). The typical methods all use a three wire cable (black/white/red). Typical setups are:
- Two travelers + neutral from switch 1 to switch 2, then a separate cable takes switched hot and neutral to the lights.
- Two travelers out from switch 1 to switch 2 + switched hot back from switch 2 to the switch 1 box (but it doesn't actually connect to switch 1) and another cable takes neutral (which was together with hot going into switch 1 but neutral doesn't actually connect to switch 1 with dumb switches) and switched hot to the lights.
What it appears you have is switched hot traveling separate from its partner neutral and separate from the travelers (the white in the cable not used). You can't do that.
So some additional research is needed - carefully picking through the tangled mess of wires - to diagnose, and very likely repair, this problem.
The good news is that removing the 3-way switching capability will very likely save you from having to run a new cable to be code compliant.