I love the OSR but I also think DnD 5E is a good game with some great ideas and when I've tried to introduce it to my group there are house rules I bring in to make it closer to what they like.
This has led me to work on a variation B/X DnD or Labyrinth Lord or Old School Essentials with 5E's bounded accuracy and Proficiency system for Attacks, Skill Checks, and Saving Throws. Maybe this is an exercise in futility but I think it's something that might make OSR games more palatable for our table and at the moment I'm calling it BX 5.
Here are some guidelines I'm using:
I'm using B/X's Ability bonuses, Ascending AC, and 5E's Proficiency system, other than that though I'm choosing to hew closer to B/X than 5E. I'm even questioning using ability scores adding to damage. Shadow of the Demon Lord dispensed with those and I really like it.
Troll for BX 5
No. Enc.: 1d8 (1d8)
Alignment: Chaotic
Movement: 120' (40')
Armor Class: 15
Hit Dice: 6+3 (45)
Attacks: 3 (2 claws, bite)
Attack Bonus: +5
Damage: Claws 1d6+2, Bite 1d10+2
Saves: Str +2, Dex +0, Con +6,
Int -1, Wis+0, Cha -3
Skills: Perception +3
Morale: 10
Hoard Class: XIX
XP: 600
Trolls have the ability to regenerate damage they receive. After 3 rounds have passed since they received damage, they will regenerate 3 hit points each round. Fire and acid damage cannot be regenerated by a troll. If a troll loses a limb or body part, these parts will attempt to crawl or squirm back toward the main portion of the body to reattach. A troll can reattach a severed member instantly by holding it to the stump. Due to this powerful ability to regenerate, trolls cannot be permanently destroyed except by fire or acid. If a troll is damaged enough to be killed (reaches 0 hit points) the troll will continue to regenerate and stand again to fight after 2d6 rounds.
