You did exquisite job so far. It is hard for me to imagine a better reincarnation of Bayonet. Your model is sleek, has uniquely recognizable shape and you managed to achieve a feeling of a very heavy fighter while maintaining intended nimbleness. At the same time this model still needs one attribute - an attractive rear. I was thinking about a radiator-like module consisting of small heat sinks visible in section between two rear engines - somewhat similar to the Snowspeeder . Obviously those heat sinks should be small, maybe more distant from each other and only slightly stand outside of the existing ship plating.
Besides the radiator idea I also have three additional comments.
Weapon mount. I agree that the weapon mount would be better placed closer to the ship main axis.
Simplified engine. If you go with the radiator idea it might be necessary to simplify the engine in order to not overdo details at the ship rear. This is completely circumstantial and may or may not hold depending on the applied texturing. Additionally if the internal engine does not stand out of the outer one the shape line while looking from top will be more sleek.
Simplified arm-wings. At this point I honestly don't know which wing arms I do like more - blunt ones, current ones or the proposed sharp ones. Current ones give a distinctive style to the ship and possibly the shipline, while sharp or blunt ones are less radical to the first look.
Once again thank you for your outstanding work,
Bogusław