A 3D voxel map would be cool, not the mini map mod but a full screen google earth type explorer.
I fixed the signal that kept getting stuck by moving the red stone to one side of where the break kept occurring. I guess that resolving red stone circuitry that cross chunk boundaries can fail if one side is currently not in memory, ie out of range.
I also rebuild the color changing light beacon with a small 'engine' circuit driving the pistons, instead of a long loop that inevitably crosses a chunk boundary. The beacons update slow though (on ps4) so my disco lights aren't all that disco. Moving the colored class over top at high speed gets mostly ignored by the beacon.,
My lighthouse is out of luck, too much effort to move the whole tower to fix its light circuit.
Meanwhile my kids saw something about a cobblestone generator on you tube and have been building sky high lava + ice fountains :/