I wanted to have your thoughts on 2 topics.
First one, I'd like to know how you handle house rules in your game.
Is it something that you will ask your players input and opinion before applying them or do you make them so because '' you are the DM and your words are the law''

Second question relate to your group of players. How well do you know them outside of RPGs? Do you tend to play with people you know or do you take people you've never met before and bring them to your campaign because you need players?
The reason I'm asking is because there has been a lot of frustration by the players within my group.
I am a player myself, and our DM has been constantly adapting most of the rules from 3ED, and since he doesn't ask what we think of these rules, this creates a lot of frustration within the players (myself included).
An example would be that if you take a reserved action to delay your initiative and strike a foe before he attacks you, the player's guide mentions that you need to add 2 to the difficulty, however, the DM decided the difficulty is 3. We asked him why he chose 3 instead of 2 and he simply replied : Because I decided so.
Regarding group dynamics, we started with 2 players and the DM invited 2 new players to the game. I would say the main issue is that we never met these persons before and never got the opportunity to get to know them before they joined the campaign, they were kinda rushed into the story because the DM was desperate for new players. Now, well, we don't really get along with these persons, it came to a point where there is a lot of bitching (for lack of better term) between the players and it's becoming a personal issues between some of them.
I just wanted to share this with you and see if you can shed some positive light on the matter.
Thank you very much for taking the time to read and sharing your thoughts!