4. Nikita Kucherov's no one-hit wonder
Kucherov proved last season that his breakout performance in 2014-15 (29 goals, 36 assists) was just the beginning. Kucherov scored 30 goals for the first time in his NHL career, had 36 assists and led the Lightning with 66 points. His 11 goals and 19 points in the playoffs led Tampa.
"[Kucherov is] one of those guys for our team -- every team's got one of those guys at some point -- it just seems the bigger the moment, the bigger they rise to the occasion," coach Jon Cooper said during the conference final.
Here are three key questions facing the Lightning:
1. Who will be the No. 1 goalie?
Andrei Vasilevskiy looked like the Lightning's goalie of the future when he relieved Ben Bishop after the latter sustained a leg injury in Game 1 of the conference final. Vasilevskiy, 22, had a .925 save percentage against the Penguins, who averaged 38.4 shots per game in the series. But Bishop, who is in the final year of his contract, is an All-Star goalie and two-time Vezina Trophy finalist. Bishop has started at least 60 games in each of the past three seasons but likely will have to give up some playing time to Vasilevskiy, who signed a three-year contract extension in July.