Yeah that would definitely be an interesting idea in the metagame. I like this suggestion for it, since its typing allow Golem come in on quite a few threats that can't do much to it or force them out (such as Scarf Electric-types or Flying-types) and gain that opportunity to Rapid Spin, making it one of the most viable options for a Rapid Spinners for offensive teams.
The problem with this though, is essentially what you've stated FLCL. We all know that Misdreavus is probably the single most prevalent wall in the current metagame, and part of that stems from its ability to counter physical attacks just like Golem and being the best spin-blocker in the tier. It also tends to be quite difficult to forgo your standard options as well since they all have their valuable uses that definitely allows it to find justification of use of other Stealth Rock users, such as Sucker Punch, Explosion or Rock Blast. If you forgo Sucker Punch, then most of the time you're probably losing to Golurk unless you're speed creeping as it switches in on an Earthquake, and if you forgo Rock Blast, you risk being used as setup bait by Haunter or Driftblim, so it's pretty much a "pick your poison" situation in that regard. Additionally, running Golem without Stealth Rock means that you have to generally stack up with other Stealth Rock users, which means that more often than not this can further open your team up with common weaknesses to Water, Grass, Fighting, or Ice.
The problem with this though, is essentially what you've stated FLCL. We all know that Misdreavus is probably the single most prevalent wall in the current metagame, and part of that stems from its ability to counter physical attacks just like Golem and being the best spin-blocker in the tier. It also tends to be quite difficult to forgo your standard options as well since they all have their valuable uses that definitely allows it to find justification of use of other Stealth Rock users, such as Sucker Punch, Explosion or Rock Blast. If you forgo Sucker Punch, then most of the time you're probably losing to Golurk unless you're speed creeping as it switches in on an Earthquake, and if you forgo Rock Blast, you risk being used as setup bait by Haunter or Driftblim, so it's pretty much a "pick your poison" situation in that regard. Additionally, running Golem without Stealth Rock means that you have to generally stack up with other Stealth Rock users, which means that more often than not this can further open your team up with common weaknesses to Water, Grass, Fighting, or Ice.