Baring in mind I've not really seen a great amount of his football since he left MK in July 2021, but based on the fact that he doesn't seem to have changed at all since then, here are my positives for you guys:
He brought in a really good squad for the level. They may have flourished under another manager but losing his signings in the summer of 2022 to higher levels is a big reason as to why we got relegated the season after finishing third. Scott Twine, Matt O'Riley and Harry Darling especially were superb signings, and even the year before he brought in quality like Scott Fraser and managed to convince Cameron Jerome to return to England at a lesser level.
He'll probably get you believing again if you can set aside a lot of the negatives. He's a good talker is Rus and despite inevitable mistakes in defence, he'll have you believing that it's all for the greater good of the team.
When it works, it's great football. The game has changed since 2019-2021 when he was here but I distinctly remember feeling extremely positive about a Russell Martin team going into the 21/22 season... then of course he left on the opening weekend of the season but it's probably harder to do that to Leicester than it was MK at the time.
Bragging Rights: Who doesn't enjoy saying that they had more possession than PSG, Man City and everybody else in Europe.
He clearly worked well enough at Southampton with a team that's too good for the level, and that should be the case with you guys. When you get back up again the story may be different, but focus on that if/when it comes.