Minor It would be nice if you could separate each entry in various multi-entry text fields by newlines, rather than by commas. Or, maybe build a list by entering lines in one field, then hitting "add" which appends it to another field's list.
As an example, let's say I have job "Base" which causes "Core", "Really long job name with spaces", and "Another long job name with spaces" to be run. Entering all of these as comma-separated entries in a single-line text field is pretty annoying, and difficult to parse if I made a typo (even with the error prompts such as "Really lang name with spaces" doesn't exist, perhaps you meant...).
Another example would be entering the list of build artifacts. When building software for Windows, you're going to archive the .dll, the .pdb, maybe some xml files.