Why not leave the format as it was during it's 80s NBC run, except for the WBMB and replace that with the actual shopping bonus round and call it a day. Most people nowadays probably don't remember the actual format of $ale except for the diehard game show fans anyways.
Start of with $20, +5/-5 correct/incorrect answers. 2 Instant Bargains and 1 Instant Cash. 3 Fame Games to win more "points"/prizes and of course the Speed Round.
For the Instant Bargains, I'm looking at prizes in value of $500-$3000.
For the Instant Cash Game, start the pot off at $1000 and let it go up $1000, each day not one, as far as the other two boxes, they will contain $500 and $250.
Speed Round is still 60 seconds.
As far as the shopping is concerned, offer upscale prizes like Wheel and Price do on occasions.
For $85, you can win the Garage Sale (which is every prize offered on that show, including the prizes from the Instant Bargain (previously won or not) and the Fame Game prizes plus $5000 cash to take home.
For $170, you can win a $15,000 Gift Certificate to a vendor of your choice (you choose from a selection of vendors)
For $295, you can win a complete Home Funishings prize (think every room in the house with everything that needs to go in each specific room that is availible to be offered. Sponsored by Home Depot
For $410, you can win three 5-star vacation packages, totaled at more than $20,000
For $540, you can win a 45,000+ vehicle
For $600, you can win the Cash Jackpot that starts at $100,000 and goes up $2500 each day not won....and finally for
$750, you clear everything (including the kitchen sink in the Home Depot Package!)
I mean if you are really going to do the shopping format, you have to offer stuff that will make the champion risk it all to gain all.
For the other two contestants that didn't win, a consolation prize of $1000 is given to them.
------Primetime Specials------
The only change would be to do the Winner's Big Money Board with the same prizes offered on the daytime counterpart as the bonus game. With getting two WIN cards, winning the entire loot.
As far as the host/set/announcer/models...that can wait but the main game needs to be instituted first and foremost before anything else. With out the game, those things wont happen anyways!