Mtgo shuffling is seriously bad. I have just started playing online having played with the physical cards since the late eighties. I have spent good money online and have constructed copies of my physical well playing and fluid decks but online they seriously underperform due to mtgo's shuffling and draw mechanic. I find myself constantly mulliganing down to ridiculous card starts. Please do something about this.
I have heard complaints by many others too. I do not ask for a perfect draw and can deal with being land swamped etc. But this as it stands is a fundamentally bad shuffling dynamic and leads to seriously unbalanced games.