Perfect software, gui update?

the functionality of the software has perfect for what I need, so THANK YOU for that.

first, how do you create a number list?
If I selected 10 files and file 1 has 01 added to the beginning and the tenth file as 10 added to the beginning.

I was wondering if there has been any consideration of changing the gui to a simplified/modern feel to it or if there is any consideration of porting it to a Linux/Debian OS.

Thanks