Dealing Vladdy is neither useful or practical at this point. I'll be the first to admit that I thought he was the most worthless player on the roster outside of Filppula but once again Kucherov was right. He has explicitly stated at least one time that I can remember that he plays best with Vladdy as well as Stamkos. I don't know how much credit Jon Cooper deserves for listening to Kucherov and putting this line together but I'm just glad it's producing results.
If we could get Killorn and Callahan scoring sometimes then we'd have arguably some of the best scoring depth in the NHL
Through 11 games, I think we already do. Even with Cally and Kunitz not producing a whole lot, they're generating more chances than your average 4th line.
As for moving people, there's really no reason to move anyone right now. Maybe Sustr and Paquette, but even in those cases, only if we have someone ready to dip their toe into NHL action.
We could visit moving Vladdy in the off-season, depending on how the rest of this year plays out. I think he's going to have some inflated stats and it's a contract year. If he makes himself invaluable, then obviously we hold onto him. I'm just not convinced he's not benefiting hugely, right now, from playing with the two hottest players on planet earth.