What are you talking about? Increase dps by 200%? That's crazy. That would mean they would have raw dps of 30, and with 30% 39! Those would be the only ships I would ever use. Only LFs dps I would change would be to increase Vasari LF DPs a bit. Maybe from 10.5 to 11 or even 11.5.
LF do not have half the DPS of LRFs, I tihnk you are making a hyperbole here. But if you are serious about balance, we should use fatual numbers.
TEC
LF: Cobalt DPS: 9.5 Supply: 5 Max upgrade + 20%
LRF: Javelis DPS: 11 Supply: 4 Max upgrade + 30%
Yes the DPS is lower in Cobalt, but that's because they are very easy to aquire. LRF has about 50% more dps than Cobalt on per fleet suppyl basis. If you gave them more DPS you would probably end up with a guy building second frigate factory before cap factory and spamming them the whole duration of the match.
The thing that sticks out the most is the damage types. LFs have very low multiple vs V Heavy and Capital ships. Which I guess makes sense because they are so easy to aquire. Maybe giving them 75% vs Very Heavy would make them more formidible in late era fleets. Though I think LRFs have too good of multiple versus too many ships. They have no 50% multiple at all. I think 50% multiple vs V heavy or even cap ship would be in order.
I have used LFs a lot lately, and I find them useful as they are.
Now, Mindseye what you point out is already in Entrenchment as I was told. I don't have Entrenchment myself, but I was told they can fire on the run pretty well. But I'm not sure if I am too happy with this.
As I think if you want to really get to carriers there is soemthing you can use, mainly it's the Innertia Field ability for Vasari or the Intercept ability of Kodiak. Thou I do feel they are very far up the tech. Maybe they can which them around and give those abilities to the LFs instead? And move them to tier 4-5? That way they would be able to close distance but it wouldn't be straight out the gate with no research involved. And you can give their abilities to HCs.