Re: I would like to select the text of the original massage, visible, without to press the expand button on the screen
The new "process" is easier for the most common case - tap Reply / Forward, enter whatever your new response is, tap Send. Done. All without too much clutter on the screen.
If you're going to be editing the original text or responding inline - +1 tap isn't something to worry about, you'll be doing more tapping and tapping and tapping before sending.