But the Lightning should return much of the core they've built over the past decade-plus.
Andrei Vasilevskiy, the Conn Smythe Trophy winner as most valuable player in this postseason, is 26 years old, a four-time finalist and 2019 winner of the Vezina Trophy voted as the top goalie in the NHL, and signed for seven more seasons.
Kucherov is signed for the next six, Stamkos is signed for three more; and center Brayden Point, who led the playoffs with 14 goals in each of the past two seasons, is one year away from becoming a restricted free agent, an issue the Lightning will have to eventually deal with.
Defensemen Victor Hedman (four years remaining on his contract), Ryan McDonagh (five years), Mikhail Sergachev (two years) and Erik Cernak (two years) should still be in Tampa Bay too. Jan Rutta has one year remaining on his contract.
Forwards Yanni Gourde, Tyler Johnson, Anthony Cirelli and Alex Killorn are signed for multiple seasons. Ondrej Palat and Pat Maroon each has one year remaining on his contract.
The Lightning can't protect them all from the expansion draft, and likely won't be able to keep them all afterward because of the salary cap, but a lot of the two-time championship team should return next season.
"No matter what happens from here on out, this group is going to be etched in history forever and that's pretty special," Stamkos said. "I'm so proud of the guys. We won the Stanley Cup. We still have the Stanley Cup. That's just amazing."
With the players who will be back, and the championship experience they have, it's not a stretch to think the Lightning can do it again next season.
"We went from the new kids on the block in 2015 that, 'Oh my gosh these guys are so much fun to watch, they're going to be back again' to all of a sudden it gets tilted and now we're the team that can't get it done to now you're throwing the word dynasty around," Cooper said. "That's a huge wave of emotions in a six-year span to go through, but this core went through it together and it is coming back. Just a special, special, special group, and who knows?"