House Rules

ADnD 2nd ed. - Player's Handbook

Rolling Stats: Roll 4d6, keep the best 3d6, once for each Ability Score in order. You can swap ONE score with one other. If you really suck, you can re-roll once/twice.
Reason: avoid too much munchkinism...

Hit Points: Every PC receives maximum HP at level one. For each additional level, roll twice and keep the best.
Reason: better survival chances.

Initiative: Group Initiative, modified by size. PCs roll 1d10+3 (for being Medium-size). Actions must not be stated in advance (before rolling Initiative), they can be decided on the fly.
Reason: speeding/smoothing combat.

Movement: Everyone can always move at least 5 feet (unless impaired). So, if you make 2 attacks per round, or you cast a spell, you can still move 5 feet.
Reason: avoid static combats.

Spontaneous Healing: A Priest can "lose" any prepared spell in order to cast any spell of the Healing Sphere he has access to, of the same spell level or lower.
Reason: avoiding the need to prepare mostly healing spells.