What is special and what is lacking in the Samsung Galaxy S21 series?

Special —

1. Flatter screens for better usability
2. Contour camera design
3. Oneui 3.0 (basically Samsung's version of android 11)
4. 3x and 10x zoom cameras in s21 ultra
5. Ultrawide camera doubles as macro
6. A lot of Camera functions added
7. Matte finish for all 3 phones(so won't attract fingerprints)
8. Variable refresh rate for all 3 (ultra has a wider range) so better battery life
9. S pen function and support to s21 ultra
10. Gorilla Glass Victus for every phone of this series
11. New colours (was that worth mentioning??)

(Picture for representative purpose ONLY)

Lacking

1 s21 has a plastic (polycarbonate) back

2 s21 and s21 plus have fhd+ screens which means lower resolution (earlier is was wqhd +) , ppi is 412 and 394 ppi respectively.(correct me if I'm wrong please)

3 No charger, no heaphones,no case in the box

4 Fast charging only limited to 25 W in every phone

5 MicroSD card support removed for all(means no expandable storage now)

That is all i know, if you know more please suggest

Thank you :)

Edits are welcomed