Ok guy, i have an idea for a house rule but i would like your opinion first.
I call it the "You succeed, but..." rule.
Basically it will work like this.
When making an attack or proficiency roll, if the roll fails by 5 or less, the player making the roll has the choice to still succeed but their is an added negative.
The player making the roll always has the choice if they wish to "succeed, but...". They always have the option to just fail the roll.
The "but" will always be a negative of some kind depending on the situation which will be decided by me after the player has chosen to use the house rule or not.
This rule will not be available to NPC's or monsters unless they are under full control of a player (like hirelings during a combat).
An example of this would be: Bill the fighter try's to hit the angry goblin he is fighting with his axe. He needs to roll a 13 or more but unfortunately rolls an 11. Bill's player decides to use the "you succeed, but..." rule. The roll is a success and the damage is resolved as normal. After this the DM declares that though Bills attack did manage to hit the goblin, he has over extended himself and is now more vulnerable to attacks up until his next round.
anyway, let me know what you think.
Edit: Also i added the MVP rule to the exp house rules section.
A hundred years from now, D&D 99.5E will have pared the game down to four skills - Hurting, Breaking, Living, and Talking. Talking will be a dump stat for most classes.