Would be neat if beacons also modified other beacons, so an array of speed only beacons packed tightly together would balloon in power consumption on its own.

It'd be neat to have as an optional setting, but unfortunately, the current implementation is already approaching the limits for what's feasible here considering how many different possible energy values there are with quality. Each additional module slot affects the system exponentially.

I'd recommend checking out this mod by protocol_1903: Beacons Effect Each Other