You are cheating the bank of 
but paying more quanta in a match. Sound fair? That is how Fractal works.
Fission + Light Dragon costs 16 quanta of 2 types and gives you 6 RoLs.
Ray of Light + Fractal costs 9 quanta of 1 type and gives you ~8 RoLs (including the first).
Fractal is cheaper and gives more.
The fission wouldn't be your main strategy, just an additive measure. So it's more like "Fission costs 4 quanta of 1 type and gives you 6 RoLs."
And, mark of 
, replace some photons with 3-4 fissions, you've just made fractal/RoL stronger than it needs to be.
Forget this example, though. Just explain to me how you think it's balanced. The upgraded version.
If you discount the cost of Sacrificing a creature (aka the cost to get that creature) then you are ignoring the balancing mechanic. As I pointed out, sacrificing a dragon puts Fission as more expensive than another Fractal. If you do not see sacrificing the dragon as a cost then how did you get it on the field to sacrifice?
Lets assume the unupped is balanced
Fission + Voodoo Doll -> 8 Photons
Cost: 3
+ 2
+ 2 cards -> 0 quanta + 8 cards
Since quanta costs of 2 types are roughly equivalent to quanta costs of 1 type +1, we can convert this to
Cost: 6 quanta + 2 cards -> 0 quanta + 8 cards
This is a 1quanta->1cards ratio
Fission unupped costs 3
+ 1 card + duo = ~5 cost units
Fission upped costs 4
+ 1 upgrade + 1 card + trio = ~9 cost units
Upgrades range from 1-2 quanta worth (with some 0 and 3s). In this case it is worth about 2.
Notice efficient use of Fission upgraded would require a trio. Trio costs are roughly equivalent to duo costs +1.
Ray of Light is worth about twice as much as Photon. (1 card vs 1 card + 1 upgrade [valued at 1 see Dragonfly])
So double the value (Photon -> Ray of Light) about double the cost (5 -> 9 cost units).
