I have barge , it is slow indeed , maybe to get it litle more menouverable for 1 percent turn rate to be buffed would be reasonable cause when npcs start bumping you cant have enough time to turn to right direction before thez come back and spin you 2 or 3 times.
That is only real technicall problem with it. Or if possible at least to be arranged that neutral NPCS or those neutral fighting around stick more than 1k away . Which i doubt is possible to redesign due general game mechanic. So, i stick to my first remark. Buff its turn rate for 1 - 2 percent that we who have patience to drive it can turn away and escape bumpers.
There is one help with barge captains. You can create macro command to asign /stuck command to one key. That helps greatly when traversing asteroid field (yea , i am looney who pass asterodis in barge)