Both digipack designs have their pros and cons.Yes, the mini-LP is a total waste. Pulling/shaking my treasured surround discs just to get them out of the package so that I can play them is not an option for me. I always transfer those discs to a CD case. The digipaks you mention are fine but I prefer the type that Power and Glory came in because there is also a place for the booklet.
The Gentle Giant, ELP, and "Benefit" designs do have a space for the booklet, which is great.
But the XTC, Yes, and King Crimson digipacks have the protective slipcover.
Both are fine with me.