But that choice still remains even with the availability of instant heals. It's not like units get instant heals every turn. Promotions become increasingly harder to obtain, and eventually you will need to pull your units back for healing. Plus, if you waste a promotion on an instant heal, you would be giving up on bonuses that could help in future battles, so you still have to consider whether you should get an instant heal or pull your unit back.Rohili,
I understand your argument in that the insta heal creates more choices in an already overly streamlined game but wouldn't being faced with the choice of "ok how far can I push this unit before I need to send him to the rear" also be a tactical choice?
But it works both ways. I've seen AI units being saved from certain death by instant heals.It would also create more losses for the human player (we do like to push our luck) against an ai that needs all the help it can get. The insta heal is nothing more than a safety net for the human player.
If anything, instant heals help the AI more. Firstly, the AI is less capable of deciding when it should press the attack and when it should retreat and recuperate. Secondly, the AI tends to just spam units and throw them at you, so it will not benefit much from permanent promotions. Its units have such a short lifespan that any XP it spends on permanent promotions will be wasted.