I’ve always felt that not having a classic fantasy version of 2d20 was a missed opportunity. Even though I love old style fantasy adventures D&D and Pathfinder lost me years ago as they have destroyed the game with the bazillions of murderhobo “races” and “classes”. To the point where you simply cannot reasonably keep up. But there isn’t really a good replacement. I know I know people will trot out games like Savage Worlds and others, but they never really do classic dungeon delving or other fantasy well. Conan’s skill and combat system would be fantastic for that style setting. The missing piece would be a usable magic system with spell casting rather than dark demon stuff. Basically avoid the grim dark and bring the concept of heroism to a fantasy setting instead of the cookie cutter lone wolf/reformed demon/grim dark misunderstood loner template that has been rammed into most “fantasy” settings.
With D&D leaving to pursue online and $ instead of the TTRPG there will be a open niche.