What I am suggesting is that for the 5 reactor types there is a different type of effect when a reactor goes critical or a ship self distruct happens.

for example:

Fission: Explosion but hot core is left behind on the battlefield, core acts as a hazard, ship flying near it takes damage, ship flying into it takes a lot of damage.

Fusion: explosion as normal.

Antimatter: larger explosion, armor is removed if unshielded inside blast radius.

Quantum: Shields removed in blast radius.

Black Hole: Temporary black hole, ships instant killed, smaller radius