The problem with doing PYL in a half hour format is that it would be pretty much impossible to edit a full game to a half hour, with all the added spins hit on the board during game play. They already have one less question in round one to allow some more time. This is why they have the bonus game, so that a game that runs long could be done with less editing, and then the bonus game can be tailored to run long or be really fast, depending on how the front game goes. The bonus round may be anti-climactic at times, but I think it is necessary to have it so that the front game isn't so chopped up from edits.
Pacing isn't so much a problem with PYL, Card Sharks on the other hand, is too much of a crawl. I realize the card turning is deliberately slower to pad out a game that is only one round and five questions. One problem with Card Sharks is that every game has ended with sudden death. Nobody has gone through all 10 cards without making a mistake or going through less than 5 questions. I think they either need to add more questions or adjust the number of cards per line so that the outcome isn't the same for each game.