As a Clemson alum, this discussion is very interesting for both my O's and Tigers.
First re Wagner, he was an absolute stud this year. Any time we needed a big hit, he seemed to deliver. Caden Grice, who we thought was our best player going into the season, was brutal this year. Max picked up where Grice left off last year and carried the offense. I don't think he's coming back to Clemson and think he will sign at or under slot. We had a coaching change a month ago and while there's a great deal of excitement for Bakich, numerous players have left/transferred. When Wagner announced he was leaving, there didn't seem to be any uncertainty. And there doesn't seem to be any from the coaches that he's not coming back. So I doubt he gives up the money (even at or under slot) to come back to a new coaching staff. I don't see how he could have a better year than this year.
As to the HS pitchers, both Porter and Tristan Smith are Clemson commits so it's been interesting watching them slide a bit (Porter more so than Smith). Obviously, the hope at Clemson is that they are now priced out of any remaining slot money and will enroll in August. While it worked out for us for Will Taylor, we were burned on Bubba Chandler last year so many are prepared that Porter will be drafted today, sign an overslot deal and never step foot in a classroom at Clemson. I just hope that at this point, it's either Clemson or the O's.