Three new ideas very useful.
1) Add a 6th builders hut for 20000 gems. Id be tempted to buy that as I'm trying to speed build defences not by gemming through time. If you've spent any money building, 20000 gems seems to be a good deal in the long run.
2) Shield timer visible when you view a persons base, could be located on the town hall when they are riding a shield.
3) Next builder free timer countdown at the top where you can buy the builders hut or better yet, view info on builders hut shows what is being upgraded and the time left to finish for all the builders (currently it is blank).
What do you think?
