This also separates the Eagle from the Falcon somewhat. Honestly, I think the Falcon is fine for its cost. The Eagle gains a premium on flux stats now for the (significant) loss of speed. 75% more flux for 43% more DP isn’t bad. It’s the Champion that now looks relatively anemic, but Ludd knows it doesn’t need a buff!
Playing around with it, it doesn't actually feel that much better than the Falcons in terms of flux. With actual builds, I often put on max vents for both the Falcon (non-pirate) and Eagle. Falcons, being cruiser tier, benefit a lot from the fact you can dump 30 OP into vents.
Falcon: 14 DP, 7000 capacity, 400+300=700 dissipation
125 OP - 30 OP (Vents) - 15 OP (ITU) = 80 OP
500 capacity/DP, 50 dissipation/DP, 5.7 OP per DP
Eagle: 20 DP, 11000 capacity, 700+300 = 1000 dissipation
155 OP - 30 OP (Vents) - 15 OP (ITU) = 110 OP
550 capacity/DP, 50 dissipation/DP, 5.5 OP per DP
Eagle has a slight edge in capacity if nothing is spent on capacitors, dead even in flux dissipation at max vents, and behind on free OP assuming a simple ITU build. And and at base, the Falcon is still significantly faster.
So, assuming a common build type where flux vents are maxed, it's 43% more DP for 43% more flux dissipation, and maybe 37.5% more OP, which doesn't sound nearly as good. More hullmods favors the Eagle, but then converting them to s-mods favor the Falcons (at a the price of more story points).
If you wanted 75% more flux in actual practice for 43% more DP, then you'd want 925 baseline flux dissipation, going up to 1225 at max vents. Which kinda sounds high, since that's nearly Odyssey tier flux dissipation. I suppose it would let you run kinetics and a heavy blaster without a problem though.