Disruptor is probably the best sub weapon in the series. The power level of Splat 3 is lower than Splat 1 on top of that, so you'd need to be extremely careful about giving it to weapons that can take advantage of it. This would mean that putting it on the traditional Disruptor weapons like Mini Splatling and L3 are no-nos, and it can only really exist on things like Jr. Because of this, I don't think it would be worth it ─ it would essentially be relegated to a few bad weapons and you wouldn't be able to experience what made Disruptor fun to use in the first place.