It depends on the collector. Frankly speaking, I would purchase something in the aftermarket only if it came in OGP (original goober packaging). Other folks have no need for the original packaging and toss it and still others send the stuff into third party graders and have it slabbed. I've even removed stuff from OGP in order to add to an album......it's whatever floats your boat and is all determined on how you like to collect.
To answer the OP, when I'm buying mint items, I prefer them in the OGP with all appropriate certs, pamphlets, etc.... I collect GSA's and just made a deal to buy the correct cards for my '78 and '85 CC's. I have also purchased just the blue boxes so I could replace some of my other tattered ones. Do I think it's absolutely necessary to do this? No. But I want them to be near to OGP as possible. I believe there are other collectors of mint product, like of mind.
In the last two years I've busted up dozens of mint and proof sets (1968 - present) to build modern sets of most denominations. Coins go into 2x2 and three ring binders. Pages of luster-y nickels and quarters look so nice to me.
Well, that depends on what exactly you are talking about. Take modern Mint Sets or Proof Sets for example, they come to you in a shipping box usually and there's no harm in discarding that. But inside you find another box and inside that box is a hard plastic case that actually contains the coins. It is best to remove the coins from this inner box, but save the inner box. And then store the hard plastic case that contains your coins in one place, and the outer cardboard box in another place. Also store the COA (certificate of authenticity because it is paper as well) inside the box. That way you always keep them together and don't lose them. This is because paper products contain materials that are harmful to the coins. The paper products can cause unwanted toning. But it best to save those because they ARE part of the original packaging. And should you ever wish to sell your sets, many will not buy them unless they come in the original packaging. The same thing follows with most mint products. They all come in one sort of original packaging or another, but they are all also inside a hard plastic holder of some kind. So separate and store the outer packaging separately, and store the coins in their hard plastic cases. Now, should you ever remove the coins from those hard plastic cases ? Well that's up to you. Some do and some don't depending on personal preferences. Personally I never would, but that's me. And don't forget there is yet more to proper coin storage than just removing the coin from the original outer paper packaging. And it is equally as important.
I leave the coins in the OGP but place them in zip lock bags; air pushed out. The latest mint products have coated cardboard. I doubt that the coated cardboard is creating toning issues with the coins in the plastic cases.
While it is true that zip locks can add an extra layer of protection for coin storage, by doing that you are making things worse. The cardboard, even if coated, will still put off gasses. And by placing the coins in a bag with the cardboard, you are concentrating those gasses around the coins. And since plastic is air permeable, you will also be exposing any other coins stored in the same place to the gasses put off by the cardboard.
You might also get unwanted condensation inside the bag if it's exposed to temperature changes. It's unlikely if you store them properly, but it's possible.
I'm not sure of the weed that you guys are smoking, but I'm finding no issues with anything stored in zip lock bags.
I don't know Phil, I've had stuff stored in OGP, in a wooden dresser, moderately climate controlled, and have experienced no issues over the last twenty years.........
