Feature request / Feature implement seek help

We need to implement some functionalities in the installation package, and I'm not sure if they can be achieved. Please help me by letting me know if these functionalities are currently not possible or if they can already be done.

If you're busy, even a small hint would be greatly appreciated. Thank you!

1, display details on copying file stage, such as copying file1.txt  /  running script XXXX

2, display a looping of images during coping file stage

3, customize the QMessageBox, like adding more info strings, customize font, customize button style

4, retrieve return value in installer.performOperation or execute an external script file.

5, Add "Maintenace" option to uninstaller or installer like other installer suite. which can repair the installation.