I like the new Office 365 MyApps resizable icons

 
So I can resize some icon and minimise the ones I don’t use much, instead of hiding them fully.
Resize_MyAppsO365_My_Apps
Shame that we still cannot deploy custom icons to all users in one go, there is quite a lot of request about this in UserVoice so hopefully it will be developed:  Allow the admin to pin custom tiles to the app launcher for all users in the tenant
Other suggestion to improve the App Launcher, some not always clever but other would be great to have: Apps and App Launcher UserVoice.