ability to prioritize troops in barracks
When someone is training troops,he should be able to queue the said troops and start a new one.For instance,someone is training dragons in all 4 barracks.15 minutes has passed and his clanmates want archers.To give the archers,he has to wait for the dragon to finish or cancel it.So we should have the ability to choose which troops to train first without cancelling all the previous troops.
Also,pekka lvl 4 should be available in th9. Pekka gets 2 upgrades in th8 and 2 in th10.So one should be available in th9.
People should be able to assign multiple builders on 1 task for extra speed.