Has anyone attempted and/or succeeded at patching/repairing a burst wingding bladder? Please see photos - and thanks

Yes, using Tear-Aid Repairs Patch Roll Kit for Type A Fabrics.

The trick is to get the plastic as flat as possible so you don't get any "air veins" through the tape. I've repaired worse looking blowouts than pictured. I basically keep adding tape until I don't get anymore leaks.

Good luck!

I had a similar hole in a bladder, yes, getting it flat enough for tearaid to work is hard. I chose to heat seal the stretched nipple area then tear aid over the top.
Heat sealing is easy with a piece of dowel, two pieces of baking paper and an iron. Use the dowel to create an edge to seal along and the two pieces of baking paper either side of the bladder to stop sticking.
Seems to be holding fine so far.

Had to do a repair a few days ago: