One important clarification concerning the model and its shipline. While this model cannot be a VHF version of Bayonet for obvious reasons, it is different enough to be a part of a completely new, in this case Lane Hacker, shipline. I do not even think that any radical changes to the model are necessary to limit the resemblance, as in my opinion the bearing resemblance to Bayonet is not a vice, but a virtue. In roleplay Bayonet was epitome of Lane Hacker technology. Lane Hackers selling Bayonet to black market makes sense only if they were working on something new, intending to use the additional funds from ship sales to complete a better version of it. Something not entirely identical but slightly similar to Outcasts dumping Sabre for Rapier.
It is just heavy
I cannot help to think that the model you made is more of a Heavy Fighter than a Very Heavy one. While the plain top might lack additional details, it might be a good way to distinguish this way Heavy and Very Heavy models, giving the latter additional top "fins", "exhausts" or "external modules".
It doesn't have to be fat
As we mentioned already the model does not have to be fat to avoid being too flat. Changing slightly the horizontal axis of the ship to be either a bit curvy or to simply change "wings" orientation slightly will most suffice. This will expand vertically the side profiles of the ship, while also reduce the top profile - making it I think a PvP'able vessel.
The more I look the more I like
Great job so far. The more I look at this model the more I like it. It obviously needs some fine tuning. Here are some of my remarks.
Cockpit. It's general shape is nice but it most likely needs more vertices unless you want to use super customized textures. Especially it needs something to distinguish the part where cockpit "glass" is fused into ship frame. Also I think you could add some love to the connection between cockpit segment and the ship main shape.
Wing-sticks. I would play with the length, broadness and shape of the mini-wing sticks on both sides of the cockpit. However, the more I look at them the more distinctive style and shape they give the whole ship.
Engines. Looking at these engines I think that they are simply too long. They have two parts. so maybe try to simply partially fuse the smaller more external one into the bigger one reducing therefore their length in about half?
Textures are everything
As we all know, textures are everything for low polygonal models. I humbly suggest that after addressing the comments so far, instead of making lighter and heavier versions of this ship you try to put some clothes on it. It will, I hope, allow everyone to fully assess the model and its, I hope, beauty.