On the power play, the Lightning won't have Kucherov in his usual spot in the right face-off circle, meaning that dangerous one-timer option on the opposite side of Stamkos' dangerous one-timer option won't be there. Point, who is expected to move from the middle of the first unit to Kucherov's spot in the right circle, scored 41 goals this season but doesn't have the same shot as Kucherov, which could have an impact on how the Blue Jackets defend Stamkos on the opposite side.
Columbus could shade more to Stamkos' side and blanket him to take away his one-timer, putting more pressure on Tampa Bay to go to different options, with Johnson moving up from the second power-play unit, along with defenseman Mikhail Sergachev, who would man the point if Hedman is out.
The Lightning can still be effective if they have a simpler, shot-rebound-crash mentality on the power play. All the better if they get that shot from Stamkos' one-timer, but Point can't be shy about shooting. The same goes for Sergachev.
The Lightning, who had the No. 1 power play in the NHL in the regular season (28.2 percent), have had a ragged approach with the man-advantage in the first two games. They're 0-for-5 with seven shots and a shorthanded goal-against. A big credit for that goes to the pressure they're getting from the Blue Jackets, but they can limit that if they're quicker with the puck and they shoot at openings.
From the defensive zone, if Hedman is out, Tampa Bay will need more support from its forwards because it won't be able to rely on the stretch pass, a bread-and-butter play from Hedman. (The stretch pass actually hasn't worked at all against the Blue Jackets, who have had their defensemen pushed up to take it away, so the Lightning would have needed to make this adjustment regardless of who is in the lineup.)
The Lightning need their forwards to come back deeper to shorten the ice and create options for shorter, quicker passes leading to breakouts with controlled possession. That's harder to do without Kucherov because of how good he is with the puck, but they have enough skill to be able to create better opportunities for controlled entries.
The task in Game 3 is harder without Kucherov and potentially Hedman, but the Lightning won't be cooked without them if they make the proper adjustments.