Jarvis feels very situational. Using him is an uphill battle.

If you only use Jarvis once in a game, he's a REALLY bad First Aid. He'll heal you for 2, but on his schedule, not yours. Unlike Downtime you can't pick which of your AE turns you use to heal, it must be the one where you flip down. This is strategically bad because a lot of times you won't know that you need to flip until after resolving a villain attack, by which time you might already be exhausted from defense or encounter cards.

So what are his advantages that make up for this? He can drop a status card and he can work with other players who happen to be playing an Avenger. Personally, I'm not a fan of "over fitting" your deck to a situation. But some player do like doing this and making decks to play only with friends when they want to theme a game on one specific team of characters. Jarvis seems like a card designed only for those tables. Considering Jarvis doesn't exhaust when he's used, he could see a lot of serious use in an all-Avengers 4-player game. This "high ceiling" to his power is probably why his floor, the far more common use case, is so abysmal.