[Suggestions] Improvements for the game

There are so many great suggestions here!

With regards to Global Trade, I realise this may not be a popular idea, but I think the game would be much more enjoyable if special items were allowed to be sold, but not advertised on GTH.  Why?  As we all know, it is extremely frustrating to click on an item to find it already sold. The current first-come-first-serve system is also unfair to those with slower devices or connection speeds.  On the other hand, there is nothing better than finding that long-sought-after-item sitting there next to some random blankets or logs.  Oh Happy Day!  If the items could only be found by luck (or pre-arranged trade) it would not only be more fair, it would also be more satisfying.  Of course we'd all like to be able to search for the item we want.  But I understand the problems inherent in a searchable GTH.  The only way it might work is if there were a waiting list or something. But then the shelves would be full of undesirable items only.

I really like how the gifts force us to look at other cities.  Some people have really cool layouts.  How about an option for "liking" other cities, and their mayors would get rewards based on number of "likes"?   It would also be great to give rewards for total number of visitors.  That would encourage people to sell better stuff on GTH (and also to come up with more creative City names).  As gifts are only given once in a 24 hour period for visiting each city, it would be great if there were some sort of marker to indicate which cities have already been visited.  It is very difficult to remember, especially as many city names are in languages I can't read.  

On more aesthetic issues... we need more variety of buidings.  I would love high-capacity building that are *not* skyscrapers.  They block out everything else.   Also, please let us plant trees.  Some of the natural trees that I had designed my city around were wiped out with the latest update.  I'd pay (sim money, not real) to plant them where I want them simply to have my city look better.  Rivers would be a bonus.  I'd like more colourful parks, too, like the sakura park.  Expensive, but worth it to have a nice looking city.