tldr; no shield until 40% of base destroyed (i.e. just the TH won't give shield). Townhall holds WAY more loot. Discourage snipe bases to make the game more fun for everyone.

Bear with me for a sec as I realize this is "game breaking." If you look at your defense log I'd bet that 90%+ of the players who attacked you have their town halls outside. Since everyone gets the free shield as soon as they log off (crystal 3 and up), the offers get lousy pretty quickly as 90% or more players are on shield. When is the last time you got a revenge?

We get a shield at either 1 star or 40%... remove the one star component. So if you've got your TH outside you can lose and still not get a shield.

Sadly, this alone won't work as folks will find a way to make 40% bases. So what if the loot available in the TH scaled? What if my town hall holds a percentage of the loot, equal to one of the storages? I'd be far less interested in leaving it out for the free shield as it's going to cost me 100,000k and possibly some DE, not 1000. This would also make more gold available for th10 (or 11???) to spend without needing more buildings.

This SHOULD clear the clouds up a bit. If there were 900% MORE bases to attack within your trophy range you'd see far fewer of the 1 cup offers. Titans would actually see bases without waiting for hours.

Yes, people would be pissed. Yes, my TH is outside right now. I'm frustrated nexting for 30 minutes just to get a trophy offer I won't lose to a snipe when I log off.