Unless CBS gives TPiR back a few minutes of commercial time (which has no chance in hell of happening), there's simply no way to prevent the show (with its current six game/six One Bid/two Showcase Showdown format) from being rushed.
Now, there are three possible options to change the format that would reduce the rushing, but none of them are pretty. They could either:
A) Eliminate Contestant's Row, and have the called-down contestants come up on stage, (like TNPiR'94)
B) Eliminate the Showcase Showdowns, and have the top two pricing game winners advance to the showcase (like the half-hour shows).
or, C) Play four pricing games and four One Bids, instead of six, and have two players in each Showcase Showdown, instead of three. (Five One Bids and five pricing games wouldn't work, because one Showcase Showdown would have two contestants, and one would have three, which would be awkward.)
The downside of option A would be that it would eliminate the last remaining tie to the original Bill Cullen version. Also, it would be possible for a contestant to win absolutely nothing at all, and the producers could decide in advance who plays what game, which I think would be unfair.
The downside of option B would be that the contestants who play pricing games with cheaper prizes would be screwed out of the Showcase, unless the contestants who play games with more expensive prizes lost. To me, that's a pretty major flaw. Also, it would eliminate the Big Wheel, which I think has become a major part of the show.
And the big downside of option C would be that TPiR would have too much time to spare. The pace would have to be slowed to a grinding halt in order to keep the show from running short. They would basically have to stretch out the show an extra 10 minutes or so to get everything to fit, since the average pricing game segment, including the One Bid, is about 4-5 minutes. Also, the quicker pricing games, like Switch?, Double Prices, Side by Side, Most Expensive, or One Right Price, would have to be drastically reduced in frequency, unless they are balanced out with several slower games.