Prevent upgrade in the field.

[Uxbridge]

Is there a way to prevent certain units from upgrading in the field? I'm thinking about air units, mainly. As soon as a research-level is reached, the air becomes full of that type of unit. I would like to have it that newer types can only be manufactured, not upgraded to, so that there will be a diversity of equipmemnt types on the battlefield. I suppose tanks should fall into this category too.

If possible, I would raise the limit in the force pool somewhat, and make the units slightly faster to produce.

But can I? [&:]

[BillRunacre]

I can't think of a way to do this I'm afraid unless you make the cost of upgrading much greater.

[Uxbridge]

Then all units will suffer. No, I simply have to skip this idea too. [:)]

[PHalen]

I like the idea though!
I use modded silhouette counters so it also feels kind of weird to see the IJN with a full hand of Yamato class BB’s only…[:)]
But implementing it would probably impact game mechanics & balance a LOT!

[Uxbridge]

I've been thinking hard about this. One idea is a more or less fixed reinforcement schedule for air and naval. But there's always something ruining all the plans.