>>96918157
>do we go back to original Rogue Trader era, where Leman Russ was just a chapter master
... do you mean Leman Russ 2 or Leman Russ the human in power armour?

I have the opposite experience with those I'm with.
>go to "old"hammer - everyone reverts to starry eyed teenagers who love models and will tell you how much they love bolters and how many variants there are in [random white dwarf issue]
>go to "nu"hammer - everyone's on edge, politics is at the front of minds, "I hate the new models and the gay arse names"
Anyone whose first experience with 40K is 10th edition (or secondary materials) can't gel if they don't immediately immerse into "old"hammer when presented, but the simpler naming conventions, especially for marines, get them hooked mostly.
I know products can't sit still else the company will fold but everything from The End Times onward has been marmite. Well, rancid marmite, with the spoon held by a commissar demanding you to agree the Emperor was always an ork and nothing has changed, to say the least.