Weak vs. strong, interesting. Since gaining higher Aged units, I can take on and usually win against the whole neighborhood. I can push into 100+ on attrition and usually get sectors all by myself. It doesn't make me Strong, just makes me capable. I see other top 10 players in the hood that simply have high level GB's, They depend on having thousands of points of attack to batter down defenders, but on the back side, their defenses are usually sub-par and if it wasn't for having a big hammer, they'd be mediocre at best. The EXACT same thing with guilds.
You've spent years leveling your Traz, Zeus, CoA, CdM, TA, and have 20-30 wheat fields, chess boards, or simple attack % buildings filling up your city. Again, just a big hammer. When someone attacks you and wins, probably against your two spear fighters, there's nothing in your city to pillage, good for you. You still have a problem getting through GE5 fighting because you have no city defenses.
So yes, over time you've kicked out all the jr. players and now have guilds just full of Titan players. So when other guilds come along, they're automatically weak because you're the bully of the block. You have unrealistic player demands that only other "Big" hammers can meet. That's the way you want to play, then that's you & your guilds option. But other guilds aren't simply "weak". No one would say that about a US Marine, and they're the smallest of the Armed forces.
Don't get me wrong, some things would still help GbG such as a better matching, a few more leagues, options to stay in a certain league just like on the Tech tree, but once you "Age" up to the next league, no going back. Otherwise, I still see hammer guilds taking over the battlefield, they still build two or three towers to triple their score and increase how many attacks/attrition it will take a smaller guild to overcome to take it or actually swap. Not to mention being able to run away with the top 1% on Events with all the diamonds the GbG has given you over those 12 years.