What about the gravity drill having a small build menu? With various upgrades? Like
700,000/700,000 1000 E Allied ships moved at only 1/2 their normals speed instead of flat 8.
380,000/380,000 1000 E Allied ships may teleport in this system regardless of other effects.
20,000/20,000 5000 E High Priority Speed Debuffer which halves all speed reducing effects within it's range. (Including non Grav Drill effects)
This would give you various options with dealing with Grav Drills and make facing a Grav Drill opponent slightly more tolerable to play.
Frankly, I don't have much problem with them as they are now, I'm already a staunch fan of warp gates to begin with. But for people with different playstyles or the situations that occur that make them irritating to play I wouldn't mind this. It'd give me something to do with the extra resources.