Just an idea for a house rule for B/X Dungeons & Dragons. Apply a thief’s dexterity adjustment to their level to determine their thief skills. So, a 1st level thief with an 18 dexterity would use the 4th level row of the thief skills table.
The idea is generally like the “Dexterity Table II” from AD&D (PHB p. 12), but in a simpler, more B/X-style form.
Is it crazy?