Yeah, it was nice change of pace. Nowadays his good traits show when he interacts with Takada at work, but there are not too many times where he appears to be a pillar to the gang. Less so to Ishii
It seems like he has changed. He is more laid back and willing to take steps to enjoy life instead of being in a rush like when he was traveling the world.
Maruyama is a great friend to men but not much when it comes to big boob women. However, he never once tried to hit on the stalker neighbor and let go of any interest when he saw how timid Haruko is.