Well, you should notice that a 3.5x raise is exactly pot. So I make it 4x OOP (EP/MP) and 3x IP (LP).

Even if you have hand like KQ on the button and you have a "bad" SPR you can always check a street for pot control if you're not really that excited to get three streets of value.

Yes, it will suck if you're OOP with a weird SPR for your hand. But I seriously doubt that overbetting the pot with a medium strength hand is a great idea. Maybe a better idea in 6m is to just cbet, and check to your opponent on the turn to induce, and prepare to fold the river.