Use a point buy but only allow them to raise to 12, and give them less points, let's see, so I want them to be between 6 and 14 after racial mod, so set all attributes to 6 and give them the opportunity to raise 3 attributes to 12, that's 18 points. That get's you the desired output spectrum and you do not have to worry about a party consisting of three wizards and a rogue.
The latter being a thing which would turn me off from a campaign, if luck would determine what class I get to play, like I posted already in your other thread on that topic. What I still do not get is what You as the DM gets out of your random class thing. It makes your life hard if the players run with it and do not care about a multiple class X party. In fact, some challenges might become impossible if you do not have a minimum skill in one of the base functions fighter/divine/rogue/arcane and be it someone who got some points In the religion skill or arcana or has a good perception to locate a deadly trap.
Do not forget the "Ur- grognard - style" of playing was to steal the treasure w/o combat and to acquire henchmen for the dirty job. Everything was dicy and swingy not just your 6x3d6 in order:
What monster the party will meet, how hostile it is what treasure it got if his buddys would show up on a rest or roam the dungeon / area freely, what spell a wizard could learn etc. - all based on a random number was all part of the game - if you want to recreate the feel of these times then do not forget to include all features and not pick out a single one.
If you just want a different power level, your 6x3d6 in order will not give you that no matter what because it can swing in both directions and the character creation once done is done and does not change so fast and you and your players have to roll along with it.
The latter being a thing which would turn me off from a campaign, if luck would determine what class I get to play, like I posted already in your other thread on that topic. What I still do not get is what You as the DM gets out of your random class thing. It makes your life hard if the players run with it and do not care about a multiple class X party. In fact, some challenges might become impossible if you do not have a minimum skill in one of the base functions fighter/divine/rogue/arcane and be it someone who got some points In the religion skill or arcana or has a good perception to locate a deadly trap.
Do not forget the "Ur- grognard - style" of playing was to steal the treasure w/o combat and to acquire henchmen for the dirty job. Everything was dicy and swingy not just your 6x3d6 in order:
What monster the party will meet, how hostile it is what treasure it got if his buddys would show up on a rest or roam the dungeon / area freely, what spell a wizard could learn etc. - all based on a random number was all part of the game - if you want to recreate the feel of these times then do not forget to include all features and not pick out a single one.
If you just want a different power level, your 6x3d6 in order will not give you that no matter what because it can swing in both directions and the character creation once done is done and does not change so fast and you and your players have to roll along with it.