Lamb and Pederson would be ideal - in theory - but they fit as platoon guys for a lot of teams, so how cheaply they'll come COULD be a problem. They're not going to break the bank, but they're also not likely going to get 1 year/$3 or $4 million deals either. As had been discussed before they seem like great fits, but they're both going to be strict platoon guys. If you're signing them to have Riley and Duvall sit against RH Pitchers, who are you going to have DH on those days?
I just don't see Bryant as a fit anymore, even if the money he gets in arbitration isn't extravagant. Why bring in another RH guy to play 3B or LF? Particularly one who's hurt all the time coming off of a really bad season that will cost you prospects? Find a platoon partner for the guys you've got - if Bryant has a bounceback year, consider signing him following 2021 when there's a chance AA has more money available. The one-year deals work when you're only giving up payroll space - why give up prospects for a guy who isn't even a slam-dunk to get you past the Dodgers next season, much less win you the World Series?
Not sure how Polanco would be a fit, even if they'd take Ender's money back. Are you really going to give up a decent/good prospect to make that happen? Polanco has had two career seasons with an OPS+ over 100, AND that kind of swap costs you $2 million you could spend elsewhere - might as well keep Ender on the roster until you've gamed Pache's (and possibly Waters') clock and hope he can give you something before you DFA him. Really sucks, but I think you just have to treat Ender's salary as a sunk cost at this point - not even the rebuilding clubs are going to give you anything of value for him. Someone mentioned swapping him for a RP making a good chunk of money. That'd be a great idea, but who has a decent pen arm AND a need to have someone keeping CF warm for a prospect? Given the fact that teams like the Marlins, Tigers, Orioles, and Rangers have already called Harrison, Cameron, Mountcastle, and Taveras up, who has a need for Inciarte?