Clan castle resources

Instead of just transfering the entire resource to the storage the user must be allowed to transfer a particular resource and amount from the clan castle.
Eg: Only Gold -5000 only from 500000
Happy about reduction in training time but without differentiation of barracks it is not fully useful.
When I had 4 barracks though it took 45sec to train a archer by putting 4 archers in 4 barracks I can train 4 archers in the same 45sec but now without any differentiation it really takes long time...
Please consider thank you