The select can be hard coded in the
tile-plus.php file found here:
The section of code you need to change is in the
categorySelect() function. You can echo out a custom ordered drop down. Probably the easiest thing to do is copy the drop down from the page source and past it in there, echo’d and change the options order to suit.
I can’t add a admin UI for drop and drag ordering yet because there is not a why for templates to a=have their own settings yet. I was thinking more along the lines of a shortcode option.