Yeah I going to say no to this idea. Yes the suggestion is perfectly sound in hardcore RP.
But when you break down the effects on the actual game. No more cap vs cap. Lawful caps ruling house space.... and people would actually wonder why the population of Liberty would increase and the RP there diminish. Because every person who wants to have a big ship is going to buy them Lib (or other) Battleships.
Most people enjoy this mod for the great fun features it adds to the game. I doubt the majority revel in the high of flying ships (or in this case not flying ships) that have been allocated upon calculated musings of people who know the GPD of each faction.