Affect unit progression

[cubbysfam]

Is there any way to affect the rate with which units progress from one experience level to another? That is to say, can I improve or impede the chances of a unit progressing from a Veteran to an Elite unit, or from an Elite unit to a Leader?

[Kuciwalker]

I'm 99.9% sure no.

[Willem]

It might be possible with Conquests though. As I understand it, there's a King unit that advances in levels according to tech advances gained. We'll have to see how that works I guess.