I realize that Samsung introduced the use of the S Pen to the S21 Ultra because there was no Note 21 this year. Great!
If you're planning to have your top S model, in the future, be able to use the S Pen, consider offering a separate S Pen holder, something I could clip to my tee shirt or place in my pocket.
Since there are few options for cases that hold the S Pen (along with the phone), some of us would welcome a separate S Pen holder.
Of course, if 2021 is a one-off, what I've written is moot as I'll buy the Note 22 when it's introduced.
Thanks, Dave Horne