There haven't been updates in a very long time and it will probably be like this for long.
I think the way the studio was exhibiting these men lately wore out and lost the sexually inviting factor.
The concept of MH and PW revolves around the idea of muscles as sexually attractive which is the main factor that attracts most guys who want to watch these videos. The appeal was in that the videos followed a proggression starting with a bodybuilder who, just like a male stripper, presented himself all dressed with a nice smile and, almost as if reading the viewer's mind he began to flex a few muscles and get a little undressed. Flexing and posing are obviously erotic and a bodybuilder can make the most of them to create desire in the viewer. The more fascinating the undressing and the flexing/posing the more desire the viewer feels until he gets to the last part which is jerking off. Most of this inviting progression was lost in recent years and they went straight to the jerk off part.
It's like when you go to see a male stripper: you don't want him to take all his clothes off and show the penis as soon as he gets on stage. The appeal is in him slowly taking his clothes off and dancing in an eroticising way to make people desire to see more and more in a progression. This is exactly what I think the studio lost.
Don't give it all away at once.
I think that if the studio regained this I explained combined with the nice sceneries such as beaches, islands, the gym that were common locations to film and a theme it would make the videos appealing again.