Personally I'd like more interesting and varied maps, and this update may move us towards that. But the real problem for me is the unimportance of strategic resources in Civ VII. I've been replaying Civ V (still my all-time favourite) and, once again, and am engaged because of unexpected resource distribution. If my empire lacks iron, horses, coal, oil or aluminium at different areas, I often have to fight for them, usually at at a strategic disadvantage because of the resource I'm missing. Whether I'm rolling along peacefully, or planning world domination, I have to change direction.
I'd like to see more of that in a future update: more genuinely vital resources (not just "good to have" ones). And the penalty for not providing a luxury your people want could be higher (as in the Anno games). Anything to avoid being able to put your strategy on rails in the first dozen turns and never have to rethink it.