My own 2 cents on this, i hate the spawnbeacons. They disrupt the flow of the game so much and it's just not remotely fun to play against. With the maps have this amount of elevations and 1000s of places to put a spawn beacon it's nearly impossible to find them.
The sound they make is close to not hearable from anywhere further than 3 meters.
Finally pushed through?? Oh too bad. You didn't check every corner on A so now the enemy is behind you and you lose 3 other points.

Don't Agree with you.

This is one of the purposes of the recon class. A recon drone can be used to more easily find and then destroy a spawn beacon safely from a distance. It will also be more easy to spot the "tells" of a spawn beacon using a recon drone too, i.e. small groups of enemies keep coming from an empty part of the map or from a building. I used the recon drone hundreds of times to shut down enemy squads trying to flank or push with spawn beacons. I think it is fine as is.

Spawn beacons can create issues such as enemys persistantly staying on flanks or abusing roof top/ broken spots. Games usually go one sided, and more often then not the winning team has forward Spawn Beacons right in the front of combat so they can rapidly spawn and jump in battle.
While anybody defending gets nade spammed, explosive spammed, sniped, and beamed by SMG/ Carbines.