Removal of Magsafe has been the most irksome for me. The one revolutionary feature in those laptops which I don't see anywhere. It has saved me like PP many a times when I would have tripped over if I were using another laptop. Due to this I don't see myself upgrading beyond my 2013 MBP.
>The basic concept of MagSafe is copied from the magnetic power connectors that are part of many deep fryers and Japanese countertop cooking appliances since the early 2000s in order to avoid spilling their dangerously hot contents.[2][3][4] Apple was granted US Patent No. 7311526 on MagSafe ("Magnetic connector for electronic device", issued in 2007) as MagSafe was deemed to be a sufficient improvement due to the connector being symmetrical and reversible, and the fact that magnets within a connector are arranged in opposing polarities for improved coupling strength.
IMO, it's outrageous that improvement was enough for the patent not to have failed on prior art grounds.
I have one of those Japanese countertop cooking appliances. The magnetic connector is symmetrical. It's very obvious that Magsafe ripped off the design.