I think light fighters need a little more of a bonus, and this bonus isn't a massive one, but it would be a really good supporting bonus for the role of the light fighter.
Being quick and possibly using hit-and-run tactics as well as the ability to pursue a target a bit better are things the light fighter should be known for. It would only make sense for the light fighter to have an engine to rely on that is quicker in responsiveness to do with charge time. If you think about it, it would all better fit together. We see from the pattern in disco ships that the larger the ship = the slower the charge. I think it would be cool if the smallest ships get a bit quicker charge than now.