A powerful file manager and app Manger
First about file manager
A feature rich file manager is possible in such apps
I'd like you to visit an app called fooview. It has got a powerful file manager.It may help you
Batch rename,copy,move etc. and 'open a' tool
Grid view will be more attractive than list,so consider it
Next is app manager
App manger also should be in grid mode
It should consist all apps just like your 'luancher' app ,but in grid style.
Moreover, on this app manager add a feature to backup installed applications.
Grid style in your file manager ,video player and all others will be more fascinating.
And also find a more beautiful and catching name for your app ,I mean app title 'Floating apps'
I hope you consider my suggestions
Love Floating Apps