So with the knee jerk removal of beige, there is no longer any way to rebuild your military because you can be perma blockaded. If you do not create ALL the resources for keeping a military (muns, gas, steel, alum) [which is a literal impossibility due to the continent system] the first striker will typically win unless the defender is SUPREMELY more coordinated.
How do you think anyone can 'rebuild' and fight a war if they cannot receive resources from the alliance bank, Trade system, or produce them?
I agree with most here, You should have had an alternative ready to go before you rolled out an update that has the ability to FORCE PEOPLE TO QUIT THE GAME until your next update to the system (which could be anywhere from today to never).
I believe most players will admit that if you were blockaded for months straight, with no reprieve, no bank, no money, no trading, no changing improvements (because now you have more improvements than available to your cities cause infra loss) There isn't even a point to logging in to play the game, it'd be time to move on to a new game.
The system may not have been working as you initially intended, but that doesn't mean it needs removal without replacement. A simple games rule change would have literally solved this issue (which you did) that you claim is "abused".
Another major thing i noted is one thing you said in your piece: "Furthermore, for far too long the "beige" mechanic has left perverse incentives in war, such as not wanting to complete a war"...
The removal of beige literally enables what you, personally, complained about people abusing Alex.
Edit: added a reference that producing all resources is impossible if blockaded due to continent system