Like others have said adding to drop down doesn't help a thing... we all could just change to bronze age or something to access rouges/no age units...
What you need to do is add a icon/tab either as the 2nd (before fast) or at the end after range.
To explain further...cauze....
User Case: Players like access to rouges easily/single click, without having to delete light units of current age.
Current Implementation : Still requires 2 clicks, open drop down...scroll up ....select no age...
I hope someone from dev/QA reads this