You would think Walman-Oesterle would be worse, yet somehow they were +14 each when they were together. For a guy that fumbles the puck a lot, Oesterle jumps in like he's Makar. I don't see Chiarot as being any worse, and playing his offhand side will limit some of that aggressiveness.
Maatta is just a placeholder until Ed is ready for top pair duties, I don't see any LHD in free agency that would be willing to sign a short term deal for reasonable money. There are only 6 LHD UFAs that are averaging over 20 min per game, and one of them is Jack Johnson. Take a look at the list and tell me who you'd overpay for in free agency.... Graves? Ghost?
2023 NHL free agent players who are available to be signed during NHL free agency
www.capfriendly.com
(Filtered for UFA lefties)