Ah, 1e/2e. So many fond memories. I never really got into 1e (slightly before my time) but I played a lot of 2e using 1e adventures and whatnot. And I have to admit - I think my happiest times in my gaming career were using the 2e rules.
That being said, I would never go back to them for any serious length of time. They just don't fit with who I am as a GM nowadays. And yes, everyone house rules those old rules - often without realizing it.
Going from memory (and it's been at least eleven years since I've played 2nd ed), here were some of our house rules:
* Nonhumans could level beyond their racial limit, at twice the normal XP (not that anyone EVER hit their racial level limit....)
* PCs when rolling starting HP could not roll less than half their HP die value.
* NO resurrection magic
* Wizards had some weird "Drop their memorized spell, but take damage" variant that I only vaguely recall
* The racial "Stealth" abilities were changed into equivalent thief abilities.
* No alignment languages
* Critical Hits & Critical Fumbles
* No saving throws - we used ability checks instead
* You die at -10 HP.
* And probably a bazillion more.
The reason I bring this up is because I know a few of these rules were sort of "standard" among every group I ever played with. Particularly the HP rule and the alignment language rule - every group had them. But, with those house rules floating around, I cannot really make the claim "Hey, we played RAW back in 2e, and the game works so much better at X than >>insert game here<<".
For what it's worth, I think the reason I Had the most fun in 2e was because we were all poor, which kept splats to a minimum. And really, I think I'd probably be the most happiest gaming if I were somehow able to keep splattage to a minimum - without facing a mutiny from the players.
