Palladium is 3% moly so the only thing I'd worry (and probably only a little) about is using it on wheel bearings.
Toyota used to say moly on double cardens and slip yokes, non-moly on the u-joints. Newer owner's manuals I think backed off that and say either moly or not on slip yokes (non moly still on u-joints). The technology hasn't changed, just the recommendation since very few people really adhered to it anyway.
On the flip side I'd probably try to use moly on Birfields if possible.
Everywhere else moly-or-not, meh, it's whatever I have. My belief is fresh incorrect grease pushed often is better than the right grease left too long with dirt and water. I'm not sold that moly is magic anyway. Maybe it is but where it *might* help (like ball joints) I figure the difference in life is probably marginal from moly protecting against metal-on-metal but leaving a chunk of debris floating in the grease would be catastrophic.