Rapid First impressions, since so many people already left theirs, I'll try not to repeat them too much.
Still in my first game, went Isabella with Mississippi as planned, Sovereign, normal map, normal age length, continent+.
I just started exploration (around 40 turns). I did very well in ancient era, led 3 out of 4 paths, and the 4th one I was just 1 away from leading.
The IPs in ancient are just so annoying, as everyone mentioned. You really can't play the "I won't even build any millitary units I don't need to" game like in VI. But they (the IPs) are now practically inexistant in exploration, at least on the starting continent.
Somehow now in exploration I can't seem to go forward. Had a pretty bad starting map was way south in tundra and all the distant lands were FAR from my 3 coastal cities, could barely get a cog across, settler won't make it except one place, and the AI already beat me to that place cause they were close.
Abbasid Xerxes kicked my butt with a three pronged attack (attacked three cities) and over 20 units. I managed to lose only one settlement, but it was a good one, barely survived the others and took one of his.... then on the peace deal, he gave me back my settlement he had taken ?
very stupid, I think the AI is trying to smooth out some of the bad rep he got with the war by not holding on to the settlement he stole... I sincerely hope this is fixed very early on in the support life, because why go to war if you won't hold on to your winnings ?
Apart from all those UI deficiencies already mentioned, the one that annoys me the most is that mouseover on a tile will NOT tell you how many moves going through a tile will consume.
You have to remember by heart each and every tile type move cost and pay extreme close attention to the move borders. It's annoying as hell, I mean how hard is it to tell on a mouseover : Will take 1 move, will take 2 moves will take 3 moves ?
Deception with Isabella; I don't know about the start biases weight, but the closest natural wonder was more than 20 tiles away from starting position. Talk about a bummer. And I only found 3 total so far. I don't think I'll play her often, honestly.
As for Mississippi, Burning arrow is as fun as expected, but... not so easy to play. The burning tiles are not very visually apparent. And they WILL burn your units too if you stay on them ! Now, you might think "How stupid is this guy if he walks on a burning tile he created",
and to that I will answer "well.... a little yes". But it's extremely easy to attack a unit with your burning arrow, NOT kill the unit, and then use a melee unit to finish off the enemy. What happens then ? Your melee unit walk right onto the burning tie and stops there

Believe me, it's easy to do ;-)
All in all a very worthy product so far, I feel very far from competent with the game (normal in your first game), and from what I've seen so far, I'm really not close to crank up to Immortal, never mind deity ! Sovereign is dealing me with a full hand so far.
And oh... I'm having a ball
