Upgraded 4 lvl11 walls today (12mil total resources)
Just started my 2nd last gold mine as well, so I’ll be able to put multiple builders on defenses after this. Just watch when that happens, see how fast defenses can catch up.
Upgrading defenses in the early game is futile because there are always higher TH level to wreck you. Once you reach TH10, you can just build infernos and prevent most of your loot loss just by tricking noobs to think you are a pushover. A rushed TH9 does not have this advantage and hence can be easily 3 starred around 33-50% of the time, while my base is only 3 starred once in 6-8 raids and I don’t usually lose DE unless I’m 3 starred.