didn't we have some kind of statement against using AI? Do we have an AI stance? We have a discussion on this, I don't know if we had anything conclusive    

My first thought was "No.", and the discussion didn't convince me otherwise.   You know what else would be more realistic? Latrines, STDs, sore feet (inf) & sore butts (cav).

I really do not suggest applying this idea. Modifying unit speed according to their health just implements a huge amount of gameplay inconsistency. It is important that units respond to commands and behave as expected. I suppose there could be niche scenarios in mods where the ability to do this could be useful, or possibly for new unique units, but you have to ask yourself what benefit to gameplay this will realistically bring. To me, the idea is just not well motivated, it seems like throwing in some inconsistency for no reason at all. On the realism argument, I have said this before, but making specific aspects so realistic while leaving other aspects of the game very unrealistic sends mixed signals about what kind of game this is. I think we would be better off just changing those units' base stats to begin with.

Unpaid cursor dev, this seems a very disrespectful title. better call them volunteer cursor devs.

In general, I have a bad feeling about this feature if applied globally. This depreciates formations even more (not that I'm a fan of it) as all will be as slow as the slowest unit. At first thought I could see this for fanatics or camp cav. Or with a general speed floor of the speed of infantry. So infantry won't be affected at all. But on second thought, if you think about the micro battle with a few cavalry at the start, this depreciates retreating. Since when you retreat, you know the few wounded will fall behind and fall prey of the remaining army. I think this will be the biggest effect. That on all spots loose single soldiers can get taken out easy. I also don't think more incentives for healers should be implemented. The ranking and cost saving is already incentive enough. They are a complementary unit for when the game play allows it. But not a necessity.