[Suggestions] Improvements for the game

My list of improvement suggestions (most of which have already been mentioned before, but I'd like to reinforce those suggestions 😉 )

• make upgrading slower. Some of the lower level buildings also have beautiful graphics, but you can hardly enjoy them, as they want to be upgraded within a very short period of time. Also maybe stop development for some buildings at apartment-height (not skyscrapers) so we can build a varied city which does not only consist of skyscrapers or other high buildings. I now I could just not upgrade them but then I will always have the yellow hat in sight...
• buidings are abandoned way to fast. People start complaining about roads, and when I can't upgrade them immediately because of simoleon shortage, the buildings are completly abandoned within a few minutes. That's kind of absurd. After I fix the road, it takes quite long until my sims are happy again. 
• make it possible to build more than one factory per kind or have the option to open a second production queue.
• confirm spending of sim cash (I also have accidently spent cash)
• have sim cash sales now and then. I know i'd be more inclined to spend money if there's a 50% off sale 🙂

And of course, the Trade center. Now in my opinion there are 2 options for the traveling to another city:

• Don't travel to the city at all, but instantly buy something in the Trade HQ. Advantage : fast. Disadvantage: You don't get to see the other person's inventory, and in my experience a lot is bought or sold together. The risk is people sitting on their stuff longer.
• Travel to the other person's Trade Center, but cut out the rest of the city. Fetching city data and rendering the city is unneccesary in my opinion. Fetching only the trade center should be much faster. Advantage is that you get to see all of the items for sale. However, to prevent the main problem that people currently have (item no more available), the item should be locked from the moment you click on it in the trade center. Other people clicking on the item will get an instant message that the item is currently locked. (my personal favorite is the first option)

Other points for the trade center:

• apply a product filter (one category per store, one for factory items, one for each kind of specialty item). Or even better, filter on a per product basis. 
• better randomization of items displayed. So you still have a chance to sell them even if they are not sold within the first few minutes. 

And maybe a bit far fetched or for the future : place buying orders; like I want to buy a chair for 125 simoleons. When someone has one in his trade depot, the sale is automatically made. 

just my 2 cents 🙂