Relay's effect states that "when a friendly ship resolves a (squadron) command, up to (x) of the squadrons it activates can be at distance 1-3 of you." I'm sure many people think this ability is pretty absurd. When I initially read it, I thought the relay ship itself had to be within squadron command distance for the effect to trigger, but this isn't so. You can relay squadrons from anywhere on the board... This has a very negative synergy with flotillas, since they can issue squadron commands on the other side of the board while flying away from combat ships at full speed. This isn't fun and it defeats the purpose of needing to position squadron commanding ships intelligently.
The flavor and name of the ability "relay" also doesn't make sense given the ability. If I'm not in distance to give a squadron command to my "relay" squad, then can they even relay a squad command to other squadrons?
The simple solution to this problem is to dial back the effect of relay to make relay squadrons work more like a "boosted comms" tokens on the board. Make the relay squadron need to be in squadron command range of the commanding ship itself to activate relay, even if you don't necessarily activate the relay squadron. Also, make sure it doesn't stack with boosted comms itself, otherwise you'd still get ludicrous ranges. The whole point is to make kiting with relay not so effective, and force the ships to remain somewhere within the battle to keep using squads.
So instead, relay should read: "when a friendly ship resolves a (squadron) command, up to (x) of the squadrons it activates can be at distance 1-3 of you, if you are in close-medium range of the ship resolving the squadron command."