It would be really nice if we could make the email notification an execution package uses dependent on environment. Right now, if you want to vary say, the recipients of a success or failure message based on environment, you must create a separate version of each package for every environment you have.
If this was combined with Ulfar's suggestion here, then the entire execution package concept would be hugely streamlined. As it is, it's not unusual to need at least one execution package per environment per business area, often leading to having to create and maintain dozens of mostly redundant execution packages.
I think implementing these two solutions would be a huge "quality of life" improvement for the tool.