ahahah, i'm like you, my brain is always a battlefiled between huge fleet like i'm playing homeworld or freespace 2, i feel free to imagine my own sic-fi universe, where species fight themselves for some reasons.
Description is coming, i'm working on a terran fighter actually, i think i build some figthing scenes to illustrate them
No, it would make it tumble more, and tumble faster. Instead of pushing the door with your hand, you're pushing it with jet engines. Unless you push it at the opposite edge at the same time, all you're going to do is tumble faster and faster and faster, without moving forward very far at all, while wasting huge amounts of energy.
The Helios use thrust vectoring, so it don't need more engines , in particularly in the wing, which doesn't support the essential mass of the ship (this one is concentrated in the top of the ship where engines, life module and ammunitions are).
Smalls thruster are disposed around the ship to assist it when it want to move in a particular way.
But indeed, it is not build to fly into atmospheric conditions, when it aerodynamic is not well design and it will fall like a stone.
Thrust vectoring wouldn't help. The center of thrust is too far above the center of mass. That wing is at least as big as the main body, and is far below the center of thrust.
Imagine a door in space. If you push at the center of the door, it will float straight. If you push near an edge, it flip over and start tumbling. If we compare/replace your ship to/with this theoretical door, your engines would be pushing near an edge instead of the center.
So, it would say that there must be the same thrusting power in the bottom of the ship, it's interesting. But if you considered that the thrusting power of the twice engine is very high, it will compensate the asymmetry of the ship ?
No, it would make it tumble more, and tumble faster. Instead of pushing the door with your hand, you're pushing it with jet engines. Unless you push from the opposite edge at the same time, all you're going to do is tumble faster and faster and faster, without moving forward very far, while wasting a lot of energy.