The only thing I'd suggest is somehow making the packaging big enough tos neak the Bantha back out... It's a great toy, one of the best in the modern line, and that with new pilot would rock.
But honestly, I could see this doing well overall if there were incentives to buy it besides the beast or vehicle. For instance, a good pack-in pilot with something... Like repaint the T-16 Skyhopper, maybe a slight retool on the cockpit so it's more realistic looking, and kitbash a Fixer figure (the parts for a good Fixer exist, a head may need sculpted is all).
Or do the Landspeeder with a single-piece "knocked out" Luke and a Tusken figure? Hell, if a new Tusken was made for the basic line, a nice heavily articulated one with softgoods, you could pack him in with the Bantha painted uniquely, pack him in with the speeder painted uniquely, and pack him on a basic card... Lotta mileage out of that sculpt.
I'd be all for the $20 pricepoint unified line if it had some nice quality to it. A blue repaint A-Wing would fit nicely into this line as well, and would probably go over fairly well. Again, a repainted Pilot body with a new head/helmet would be ideal, and cost little. Lotsa incentive to get the items then.
On a Taun Taun series, I could easily see re-using the current Taun Taun sculpt, but for figures I'd kind of dig something new... Or at least some articulated legs/arms (and a working holster) for Hoth Luke while using the Saga sculpt otherwise... Whatever coat he's wearing.
BTW, I'd dig seeing the Wampa packed into an "Echo Base Defense" kind of a set. A new Hoth Rebel with the tan vest, and carrying the heavy cannon they used... That'd be rocking.