When training multiple units, drag which units to train first
When training different units from a given barracks, say Wall breakers and Archers, it would be great to have a feature that lets you easily drag which unit you would like your barracks to prioritize training first. This would be especially useful when your barracks already has several units queued up to train.
For example: 40 archers are queued to train in your barracks, but you'd like to train 2 wall breakers. Rather than removing those 40 archers, training your 2 wall breakers then re-training those 40 archers, what I am suggesting is to implement a feature that allows you to train those 2 wall breakers without removing the 40 archers and simply drag the the wall breakers over so that your barracks prioritizes to train them first, and them resume training the archers.
It is a relatively simple idea, but I think it would be a huge time saver and would be extremely practical for farming and in several other situations.