I hope their conversions are as slick as the 1e to 5e conversion tool someone released. This alone lets me use the 1e Monster Manual and old modules in my game.
I'm running a Labyrinth Lord --> D&D 5e Basic game now. It's two sessions into the 5e conversion and I'm using monsters and modules from 1e AD&D, Pathfinder, 3rd party OSR (LotFP and Frog God Games), and even one from 4e (Khybers Harvest - Free RPG Day).
Out of all of them, the 4e module is the trickiest. That one I basically took the map and the ideas, but had to switch out most of the mechanics completely. I swapped out the regular guards and cultists, but had to rebuild the dolgaunts and dolgrims to mirror 5e monsters (I based them off simplified 3.5 monsters). For the skill challenge, I just mined it for ideas, but made the necessary checks less structured.
Maybe once the PHB and DMG are available, then hopefully 4e will be easier to convert for fans of that edition. I'm not sure if the DMG will have rules for mini combat and grids, or if that will be a separate expansion.
I'm running a Labyrinth Lord --> D&D 5e Basic game now. It's two sessions into the 5e conversion and I'm using monsters and modules from 1e AD&D, Pathfinder, 3rd party OSR (LotFP and Frog God Games), and even one from 4e (Khybers Harvest - Free RPG Day).
Out of all of them, the 4e module is the trickiest. That one I basically took the map and the ideas, but had to switch out most of the mechanics completely. I swapped out the regular guards and cultists, but had to rebuild the dolgaunts and dolgrims to mirror 5e monsters (I based them off simplified 3.5 monsters). For the skill challenge, I just mined it for ideas, but made the necessary checks less structured.
Maybe once the PHB and DMG are available, then hopefully 4e will be easier to convert for fans of that edition. I'm not sure if the DMG will have rules for mini combat and grids, or if that will be a separate expansion.