Warfare and everything around it are probably the only place I feel qualified to weigh in with a serious opinion.
I'm quite surprised to see
@ilteroi and
@Gazebo seriously wanting to make a change like this; Fortifying is pretty fundamental. (I wasn't aware that the AI didn't really know how to use it, although it does explain some things.) There are... maybe three or four reasons I ever build (edit: melee) infantry?
- They can Fortify.
- Their city damage (and defense against the same; see 1) is much better.
- My unique is infantry.
- I don't have enough horses.
Fortification and city damage are pretty much the defining differences between (particularly melee) cavalry and infantry, and the city damage is not nearly as useful if the slower infantry can't be up front and take the hits while your siege (or the melee themselves, in some cases) wail on the city. (Sidenote: Cataphracts lose a large part of their uniqueness.)
Speaking of which, I'm at a bit of a loss as to how you're supposed to protect those valuable siege and ranged units if your melee can no longer Fortify. Especially after the early game, you'll essentially have no choice but to kill literally the entire enemy army before your siege units can even start moving forward. I'll grant that this is
usually the optimal strategy anyway, but the loss of Fortification would seem to make it pretty much mandatory.
Also seems like the players would lose a
massive benefit to their defenses with this; Fortifying in your own borders, along with strategic use of terrain and the usual good tactics, is one of the primary defenses against the AI's higher unit count. I can easily see, at the least, losing a lot more units in defensive wars.
I'm sure all of this can be worked around with changes to tactics and etc, and I can even see how the benefits could eventually outweigh the costs - but the key word there is
eventually. I feel relatively confident that a change like this would end up requiring a whole host of changes that I would think are outside the scope of what y'all are wanting to do at this stage of VP. I really don't think you can just slice out one of the core combat mechanics without some pretty heavy repercussions.
On top of all that, if the primary problem is that the AI doesn't know how to use it well,
@Gazebo won't even be able to test it with his usual all-AI games. This would only add to the time it would end up taking to hammer out the effects of this change.
TL;DR I don't think it's a good idea.