Hopefully but I don't honestly see changes in the boardroom giving us an uplift in performance on the pitch. Martinez might do his annual end of season "tighten things up" but I don't think over the long term he's going to change much. I don't think he feels any great pressure to deliver results as he's on some long term mission and thinks he has all the time in the world to get it right.
And we're all guessing at the moment really.
Just going off the letter that Moshiri (and Usmanov) wrote to the Arsenal supporters, and listening to one or two Arsenal fans talk about him, I think he's going to be a bit more ruthless and results orientated than we've been used to.
I know BK is still around, but this guy is effectively the owner now, and it's his money. He wasn't willing to accept Arsenal just getting 4th every season and that's why a lot of Arsenal fans wanted him and Usmanov to take over.
I personally think, after an initial assessment period, he'll want to bring some of his own people in and that the pressure on people all over the club to achieve will increase, which in my view, can only be a good thing. I think you're underestimating the level of his ambition.