Unfortunately Ben even if you dont believe it, its still true. Even the act of struggling against it will only cause the same problem

, its even worse in the Tau list because of trying to juggle stuff against the Markerlights.
The idea for drones with 2 x AP4+ disrupt is a bad idea, it also doesnt solve the problem.
Of course with those stats you would take them at the current points - thats because they would be broken good. So then what points should they be?
A formation for 150pts - still very good for 12 x AP3+ disrupt when shooting at a marked target, I could fit two formations in an Orca for 24 x AP3+ disrupt. I could drop off a formation in Tigersharks blast something for 12 x AP3+ disrupt and then pick it up with an Orca ready for next turn.
Of course at 175pts the formation becomes useless again (even though still very good for its abilities), because it starts competing against Markerlight formations and Anti Tank formations. As an upgrade for the Tigersharks it also becomes a problem because you start to compete directly with the AX-1-0 again.
The upgrade would also have to become too expensive, 8 Fire Warriors + 4 Drones would throw out 8 AP4+(3+), 8AP5+(4+) disrupt, 8 AP4+(3+) disrupt. Again massive fire power coming out of a Manta or Orca. But once you cost the upgrade for this say 125pts (still cheap for the fire power), the upgrade is starting to become a poor choice as I can fit more activations in if I leave it at home.