thinking about quitting my house

No one here knows your experiences or what you've been through and this decision is entirely up to you. Have you considered doing a leadership position in the house? What exactly don't you like about the house? Are they not studious enough? Do they not give back to the community enough? Are they not social enough? You can easily run for PR, social, academics, etc. even president. Even if it's the guys you don't like, run for a position that lets you have a say in who gets bids or be a pledge adviser.

Helping to turn a house around is really admirable and doesn't go unnoticed by the Greek community. Houses rising and falling all depends on their leaders and how they run their business. If it's just not for you and you can count way more pros than cons then drop.

I completely agree with the above comment. That being said, what exactly are your goals? You really seem like you want to drop because your house isn't "good" enough which is a shame and kind of disrespectful. Most people care less about "tiers" as they get older, not more. I might have gotten the wrong vibe from you, but that's what I see.
If that is true, you have more power to change your house than you think. If there's something you know you would be good at, go for it! If you truly love your brothers you would do it not for yourself, but for them. Chances of a house bending the rules and taking someone who's already been initiated elsewhere are slim. At the end of the day would you rather be a big fish in a little pond, or a little fish in a big pond?