After my recent mishap I decided to put together some prop guards for the Starling.
They can be found on printables.com as .3mf files, and are easily printable without supports on an FDM printer.
They are designed to not obstruct the view of the front sensors, specifically the tracking camera. As such head-on collisions should still be avoided. But they do allow for bouncing side-ways off of walls.
As far as PID tuning goes, it seemed to still handle fairly well with the default tuning. The center of gravity being slightly further back did also not seem to be an issue either.