Pulses grant some protection against silly things like:
> cap waiting next to jumpgate (cap piracy is stupid anyway)
> cap sitting on top of base, blocking docking ports, instaing snubs happily.
A base needs to be an advantage, however Tau experience has shown how annoying it is and that having them heavily armed is also bad for gameplay as it will make players hug it, as much as leaders can try to preach "do not do it", it will always happen, will always cause rage and frustration, and will always be stupid.
Therefore: slow firing, long range pulses on gates/bases are fine. Fast firing guns that cause lag and make fighting really silly (NPC Battleships, oh my God!!!) should go.