ok.Agreed. Many a time have I come up against an AI army with units firing at me from outside my range simply because they made sure to "level up" before attacking me.
AI handles the +1 range promotion quite well. They also tend to pick out my +1 units as primary targets and if I leave them unprotected they're toast. That's only anecdotal evidence which may just be my internal rage biasing my opinion because of the loss.
I'm playing in rapid combat, that's perhaps why i didn't notice it.
Or maybe because i can't see them without a unit with 'scout' promotion.
Do you see +range often in the ai navy also?