I have to say, when I heard news of the revival and the description of a diverse cast of characters now taking over, I believed it. Turns out apparently it is true. Personally, although this is the current trend of entertainment these days, I have concerns that the dynamic of this new series will be very different from what we're used to. Quantum Leap's heart was Scott and Dean's chemistry; basically like they were a comedy duo. We hardly ever saw much of the team at PQL as the stories never needed to rely on multiple characters.
With that said, I am happy to see Ernie Hudson in this new series as he is a great veteran actor and can add some clout to the casting. I also had the pleasure of meeting him at a New York Comic Con maybe about 10 years ago or so. A very approachable, humble and stand up guy who shook my hand and even made sure I told my friend to make sure I got my picture. We shall see what happens. I am encouraged knowing Don and Deborah are involved. As for Scott, well...we all know he will show up. I just hope it is more than a cameo considering this entire plot will be revolving around finding him, apparently.
Why bring "Magic" back? Why bring any previous character back? Well, "Magic" obviously has a connection to Tom, of whom Sam saved. I am willing to go out on a limb and say that old Tom is out there and alive, and will extend the connection to Sam. There is no way Sam isn't going to show up.