1. I agree very much.
2. I believe that things going flying is mostly due to buggy collision physics, but I'm sure that Dasius is working on this!
3. There are some 'secret' easter egg/story things randomly dotted around. Try exploring! See if you can get into the castle!
4. I agree, the removal of the horse and cart made moving items around a bit more tedious.
5. I believe that Charisma increases the selling price of your products. I do not know if it has changed since then, but last time I checked it just increased the price by 1 Copper every few levels or something. I believe that Dasius will change it to a percent increase eventually.
6. I agree with this. Sometimes I sit there trying to put the parts together for a minute or two, and then they finally piece together right as the customer is about to leave.