What I meant, Keith, is that simply saying "things would be harder if we things that benefit from the most efficient defense strategy no longer benefit from this" would cause "fist shaking from a mechanic" well, isn't that the point?
Low AIP games are the most efficient way to beat AI Wars, and making strategic reserves constant to resist this tactic would cause problems to energy (from having to use all offenses, including both fleetships and starships). Does that inherently make that bad? My point was this isn't bad.
So if we make forts planet based in general planet caps, and someone decided to make forts everywhere, why can't they? Why should we fear making the single greatest defense that exploits chokepoints the most problemic for general use precisely because they have a mechanic that is exploitable (energy).
I think we should not. Forts are balanced, in a sense, but their balance skews the best current defensive strategy even more strongly. For long term balance, this is not good.