-) missions screens,
All this does is provide a little bit more structure to the game.
-) loading screens,
Simply replacing elevators.
-) areas that become unplayable soon after you have finished a mission (some time with sudden "jumps" back to Normandy or the magical "press B" to end mission ),
ME1 had plenty of areas that were either a) unplayable after finishing them (see: Virmire, Thorian Lair, Peak 15) or

worthless to return to after playing.
-) No more direct passage between ship and land/planets,
And?
-) Many many super short and super linear level with nothing to do (except shoot...)
Because having to drive the Mako across Presrop to get to the very basic, short, linear biotic cult base was an enriching experience.
-) Space "cut scenes" that are rendered with a different style
Style is a matter of preference. I liked it.
-) The impossbility to talk to your fellows during the missions
Granted.
-) Less inspired design
That is just not true. How is it uninspired? ME2 is a beautiful game.
-) Inferior cinematic-visual appeal (no anti-aliasing & no motion blur & different grain filter).
I didn't notice.
There's nothing "bland" about ME2. It's an excellent improvement. You can't have something both ways and imo ME2 just does things better overall.