[Plugin: Gravity Forms Custom Post Types] ability to filter options by taxonomy hierarchy level

If I have 8 categories and 3 child categories, the plugin displays 11 options in the form. Is there a way to limit to just level 1 or level 2 or “level 3 and up”, etc?

Also, it’d be nice if the options were grouped, like this:

-option 1
-2
-3
-A
-B
-4
-5
-AA
-6
-7
-8

Instead of its current behavior:
1
2
A
3
4
5
B
AA
6
7
8

Thank you.

http://wordpress.org/extend/plugins/gravity-forms-custom-post-types/