From one Newbie to another...pleased to meet ya!
In following the train of thought regarding the use of pecan, these guys are all too correct. However, if you really want to try something new and gutsy...go Slavic! Try przyprawa do mies wiep rozwych (traditional pork seasoning from the earth)
1 T ground marjoram (do not sacrifice with oregano)
1 t paprika
1 t ground caraway
1 t ground sage
1 t garlic powder
2 t ground black pepper
2 t onion powder
Next, since you like oak, try using chipped wood from a beer keg, or from a wine barrel with this mix. This blend is also great with bigos, bacon, breaded pork chops, and meat loaf. If your pork butt is going to be sliced, serve with a light splash of fig vinegar. If pulled, serve with apricot chutney. Yes - we Poles love our brine and earthy tastes.
It won't help you speak the language, but it might earn you some bragging points!