Hmm some good news here, but also some seriously dodgy looking changes.
1)Well, removing tech trading will remove some of the cheesier options, but there are going to have to be a LOT more possible deals to make with AI civs if this is going to work. Civ 4 without tech trading reduces diplomacy to little more than hitting "no" every time the AI demands something for hundreds of turns at a time. Not just can't you trade tech, you also have nothing considered valuable enough to trade for any of the remaining options - e.g. triggering third party wars, so those get nixed as well.
2)Has some possibilities on fixing 1), but needs a lot more options than just a research bonus for allies.
3)Phrasing implies "religion" will be implemented as some unrelated system. Further simplification of diplomacy?
4)I like this one. Personally I prefer working on a small number of good cities than a sprawl of generic ones.
5)Couldn't care less.
6)This sounds promising - is this a component of the tech tree or completely separate? Sounds like the latter. "Astle" I'm assuming is a mistranslation of "aisle"/"path" or something similar.
7)I'm still very dubious about this one unit per tile thing - it has an awful lot of potential problems. Mainly it's the tedious micromanagement component. Unless units are vastly lower in number than previous games it's going to produce all kinds of pointless time wasting simply with finding tiles to store units. How do units move relative to each other? Shuffling units like a blocks puzzle would be mind rottingly dull and irritating. If I've got an occupied city surrounded by six units and build a unit, what happens? Is there any similar system to stack move? Are transports down to one unit each or what?
Return of artillery could be good, but please both provide a way of destroying opposing artillery, and teach the AI to use it, or we'll be back to the exploits of Civ 3.
8)Somehow I've a feeling city states is going to translate to "easy target", but could make things a bit more interesting.
I've a feeling Civ 5 is going to hinge on this change. Unless units are rare (e.g. a few per city) and individual units are much more sophisticated than in previous civs, it isn't looking promising.