Army Training ----> Troop Selector ?
Now that SC has achieved a new and better Army Training window, it doesn't seem too far-fetched that an idea already suggested by many may be closer to reality.
The Troop Selector opens when you attack. Right now it suffers from a standard troop order that often places the least critical troops to the left, like archers, and requires a scroll in the midst of an attack to reach the right-most spell or troop. I often fail to drop my poisons quickly enough, for example.
There are several solutions, but the obvious one would be to allow us to drag/drop and re-order the queue from left to right or store our common attack comps (just like "Quick Train" does). It might also be feasible to remove empty slots from the Selector and 'tighten up' the window as the attack is underway, but that might be tricky, to look down and see troop icons shifting left.
The "Quick Train" option with troops and spells and heroes ordered the way we want would be ideal for me. I hope SC considers this again for future updates now that they demonstrated the new Army Training functionality.