Cycrow buddy sounds like youre onto another winner with this one
I was relieved to hear that once top speed has been reached then you can freely move as when first read the description (and anyone else who had images of this in their head, just say so which will help reassure me in not thinking Im Cuckoo

) I had this clip running through my head of the old 70's BattleStar Galactic when they flip the button on their control sticks and you see those cool ships woosh away with their afterburners! (cant say about the new one as havent seen it)
This means we can take our band of fighters on an intercept course of a capship or corvette and when getting in range we go to attackmode\speed, slam on the afterburner and wooosh in guns ablaze, dodging the enemy fire - how heartpumping\adrenaline that sounds. Oh yeah also handy for getting out of a tight situation
While typing this I have thought of a couple of Q's or Suggestions for you mate:
1) On that note above about activating it as youre about to attack a ship that needs your ship to be fast if you are to survive, are you able to (and planning to) have all other ships able to have it equipped so the enemy AI sometimes pulls out a trick in battle and Afterburns away.
2) Also if you could\do enable other ships to have the option of installing the Afterburner, wouldnt it be good if you can install it onto your wingmen and have a command thats makes them activate it effectively.
3) Finally, due to its nature, the Afterburner Ive always thought is more a fighter feature. So for this I feel it should be reserved to M3/4/5's and maybe M6's
No doubt my thoughts will be met with 100% disagreement as Usual
But its a few things to consider.
Keep up that grand work old chap