My copy of RuneQuest 6 by Nash, Whitaker, & Friends at The Design Mechanism arrived today. (2020-03-04 Update: This RPG is now known as Mythras.)
It is a nice big paperback book. I've had time to scan it quickly and incompletely. I like the cover, with its nod to the Chaosium RuneQuest cover. I like the layout and typography. I like the layout. It looks very complete. It looks a bit more complex than my current taste.
This might be the ideal d100 variant for folks wanting more complexity, and OpenQuest the variant for folks wanting less complexity, and Chaosium's Basic Roleplaying for folks wanting a multi-genre system.