Randomly came across this mod as it recently updated to 0.17, found this thread, but this type of functionality exists in Mini Machines. It features both a mini beacon (with reduced stats) alongside the normal size beacon.
The mini beacon recipe does cost 1/3 less than the regular size beacon, as it takes up roughly 1/3 fewer tiles. So you can technically get a higher effect gain by fitting more mini beacons around a single entity, even if the individual effectivity per beacon is reduced.
This balancing effect can also be disabled, for anyone who just wants smaller beacons (among many other machines). There's also full bobs mods compatibility, so mini beacons go all the way up to tier 4, alongside bobs.
As for making mega beacons... there might be other mods that do this. I've been thinking about making a macro machines mod as the antithesis to mini machines, with machines that are larger, higher cost, but faster producing. Though I think Whistle Stop Factories has cornered the market on MEGA machines.