As i said above in agreement with gaelic:
The real issue is missing "auto preview".
It can be optional as proofed by ya'll not missing it at all.

But some people expect:

Shoot photo
see preview of last shot instantly and for x seconds !everytime!
hit delete bucket symbol during that period to remove/discard.

Wrapping up a tjc question in this moment.

Edit,
Ah yes, told you so.