ITS BEEN 2 EPISODES
IM SURE WE'LL SEE SOME
MURDERS.
BLACKMAILING THE COMMISSIONER
IS DEFINITELY CORRUPTION
I know it's been two episodes

But the arc is that the character at this point is a changed man because of what happened in Echo where his evil was removed.
This show is a direct follow up from that show and Kingpin decides he wants to be a mayor after that happens in that show.
If Kingpin isn't a changed man as you say then we wouldn't need to watch a storyline of Kingpin doing things by the book legally and the storyline would be pointless.
Instead it would have started off with Kingpin running his criminal empire and then becoming the mayor.