that would be nice! Regardless of what their final purpose is I really think they should be based/built by other ships, the titan would be a good one.
However I'm not entirely convinced they should be just cannon fodder. They should have a real tactical purpose! Perhaps the ability to target/disable certain subsystems/weapons on larger ships. Plus maybe the could have a signficant amount to speed so that they could get behind the enemy lines and ravage them from the back.
At the very least give them fairly powerful weaponry but lower shields/armor and much more powerful speed. Just cannon fodder sounds like a waste.