1. Access points to load balance wireless clients across access points - ability to set the threshold in the controller.
More info:
http://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDATED_chapter_01000.html

2. Fast BSS Transition - clients can freely roam between APs.
More info:
https://en.wikipedia.org/wiki/IEEE_802.11r-2008
http://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDATED_chapter_01100.html

3. Enable VLAN on the Ethernet port - to be able to set VLAN for management

4. Add error page to the PORTAL (at least) - page informing the user that there is a technical problem...