The current OC has only extremely limited uses and isnt offensice at all. It's size and the way it fires hinders it from beeing usefull at all. A single marine can cornershot nearly any Oc without beeing hit himself. Placing OCs as an anti-JP measure is also often enough pointless, because of the OCs limited range. (bast, anyway)

This is why I would like to remove the OC altogether and add a "Sentry-Chamber" or "Guard-Chamber" instead. This chamber would alert gorges of incoming threads. (As soon as a marine enters the GCs range a gorge would see something like this: "Marine with JP and HGM spotted near GC 1" the GCs on the minimap would have to be numbered of course
In addition it could emit a spore cloud, that messes with the marines equipment (map not working, JP fuel beeing drained, HA not working properly (heavy is beeing slowed down) ammo/health/armor counters showing the wrong numbers etc) This obstructions should remain about 15 seconds even if the marine leaves the GCs range.

This is just a general attempt to turn the OC into something that seems like worth putting near chokepoints and/or in hives, instead of the OCs which are mainly used to toy around with rines and on siege maps.

OCs are a buffer, not a killing mechanism. They make very effective buffers.