Welcome to the Evo Leva owners’ club !
Some of these things are new and positive improvements (the option of realwood for all ‘handles’, the foot rails and the larger tamper, the fact that a dosing ring is now included). My machine (#25) did already have an interchangeable (angled) kettle plug and the accessories were delivered in carboard boxes. Without getting under and seeing pictures, I don’t know if the machine bottom has changed.
It would be interesting to understand better the issue with the screw holes which you had to widen, as it’s not something I experieced or recall hearing about. I am qlso quite interested in your upcoming draingage mod.