active army / city highlighting
scroll bars
path tracking
info pages that don't cutoff info if longer than one page (in other words, make a second page)
protected pioneers
AI "war means war" attitude (not declare war then stay home and do nothing)
AI doesn't over-protect sovereigns (allow them to get goodie huts and explore...just don't explore near opponent borders)
tactical battle AI ganging up on a single unit instead of spreading attacks
tactical battle AI no chasing (allowing the human to run AI units around in circles)
more quests
?