I know I should upgrade to the Python, rather than having the FDL and two other ships for other purposes rather than the Python that can multitask everything, but I am on the same page with you. I just cannot seem to part with it. Between its powerful stature and of course the speed it has compared to the Python, I would rather deal with the inferior power plant than upgrade to what is clearly the better of the two ships when it comes to load outs with the Python. It is definitely not a money issue, it is simply preference. Granted, I haven't even tried the Python out yet, so this comparison comes with that detriment and bias.
I have tried and tested several loadouts, including various loadouts that equip the 4/F PA in the Huge slot. I have even tried downgrading the 4 size slot to a a 3/G beam and then pulse weapon. I simply keep going back to the 4B/G Cannon, because it frees up 2 power to diversify with other modules and the cannon wrecks havoc on any ship with its shields down. Here is my loadout that I landed on and have stuck with on my FDL, and it has served me well with any and all combat missions to farming:
http://coriolis.io/outfit/fer_de_la...4a345d6bf1.AwRj4yrI.EwBhEYy6bZ1EA===?bn=FDL 1
Obviously, there is some power management with the hardpoints deployed, as everyone has stated in this post as well as others, but despite that shortcoming with the benefit of the 6 utility slots - 2 more than a Python - I am pushing 855MJ shields and change, and its weapons loadout not only takes down the large ships without faulter or issue, but it simly melts the smaller ships. I can get attacking full on by any PvE ship, or multiple small ships forming a wing and it will not penetrate even the first circle of my shields. Generally, they only have gone down in CZ zones when the spawn is greatly uneven with the opposing side including all Anacondas and Pythons concentrating their attacks on my ship. Even then, I can run away from harms way very quickly due to the speed of this larger ship being more commensurate with the smaller ships. The hardest part of owning this ship, at least from the "get go" was acclimating myself to the manueverability since I graduated to the FDL from the Vulture. However, once I got acquainted with using reverse and forward thrusters on my x52 Pro set up, it was easy to master.
Conclusively, I do agree that the Powerplant comes a bit short on this ship, but I think that was intentional as to make it a step down from the Python, not equivalent, or make the ship overpowered. Kind of that same issue that pops up a lot when discussing ships, especially the FDL and even more so with the Vulture, which is the global assumption that the developers wanted to balance these ships.
Where I believe this ship truly could benefit from upgrades is the 8T fuel tank, which is absolutely ridiculous for a ship this size, it should at least be 16, and the FSD is seriously gimped at 12-15ly depending upon layout, and that is its optimal distance. Regarding the latter, knowing that the purpose of this ship is to fill the slot of a heavy fighter, the FSD should be upgraded to the next size because everyone is going to weigh down this ship with weapons, boosters, SCBs, Hull upgrades, and even Hull Reinforcement modules. I skipped the latter two, and limited my SCB to one since, as I said, I am not much for PvP, and in PvE you want speed not reinforcement. I boost 405 with my setup, which keeps it tight to smaller vessels when chasing them down. However, you add those multiple SCBs, Hull Reinforcement modules and upgrade the hull, I wouldn't be surprised if the jumps are under 10ly or close to that number.