The current meta has always been to fill most of your ship with systems, as empty space would be a waste if it could hold more systems (or armor).
We moved away from that with this power system, as it's impossible to get a good oversight what is in your ship and where all of the groups are if it's filled to the brim. Adjusting the end result of your systems is also a frustrating experience as you need to find a specific system (which could be placed in multiple locations, in different amounts) and either removing them, or replacing them with other systems till you find the proper balance.
The stabilizers allow us to up the regeneration per block for reactors without allowing people to fill their ship with as much power and power consuming systems it can fit.
Now you're limited by the dimensions of your ship and this would define the "maximum" regeneration of a given ship. Allowing us to define that, if a ship has all of its systems inside, you can only use 20% or so of its volume dedicated to systems before running into power problems.
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The issue here is that you are allowed to put stabilizers far, far away, giving you much more regeneration than intended for. Secondary issue is that this stabilizer system encourages people to put them as far as possible, which will push people to build them outside of their ship.
So far, I haven't seen a suggestion that would limit the amount of systems put down on a ship to a X% of its volume (before running into power problems). We have been working on finding solutions to discourage this build style of splitting up your ship's 2 major power components and have yet to reach a full conclusion.
As for OP's suggestion, inverting the stabilizer distance curve, meaning you need to put them as close together to reactor group, would bring us back to the old system where you're encouraged to fully fill your ship with power + stabilizers and its power consuming systems.