Server 911 UK: Future peace

Here are some of my doubts so please read all of them

1) When 5.0 was released, there was a tsunade NPC that allowed for some "skillbook training".What exactly was it and when can we expect it to return?

2) There was also a chakra training system which could be accessed through the stats in the character menu and had the picture of hiruzen sarutobi(third hokage). When will that feature return?Some players in my group spent a lot of coupons in it and now that menu and all their gained power is also gone.

3) Now that CN is releasing ninjas at such a fast rate, what can one expect to be the speed of releasing new ninja.Could there be a sort of Monthly ninja calendar or something according to which players could plan which ninjas they want to save for.

4) Moreover, many ninja , clothing in CN are given for free through events (shizuka,speed of light) or nominal price(swimsuit temari), while their price is relatively much much higher in the english servers, is there any particular reason for it?