Generaly, I like it, but there are a few thing I'd like to point out, on my S9+ the app icons are just HUGE (If there is a way to change it please tell me, and the keyboard...oooh the keyboard..It's to tiny the Fn keys did not even fit inside the box.. Please Fix.
Just to mention that important Feedback can also be sent via the Samsung Members App @B0bariaN
In regards to the keyboard have you tried changing the size of it via your Samsung Keyboard Settings ?
Press the cog wheel in tbe tool bar of your keyboard then choose Keyboard Layout and Feedback followed by Keyboard Size and Layout.
I can't test this myself as I'm awaiting the Samsung One Ui update.
My advice comes from being a UK Samsung Phone Owner.
I have no affiliation with Samsung.
Current Phone ~
Samsung Note 10 Plus 5G _256Gb >_ Samsung One Ui 2.5/ Android 10.