Specifically, I think its success is predicated on the success of learn and Lessons, which I believe will have a large impact on the format.
How many Pack Points does it cost to craft Tyrantrum
(If that even makes sense.) Except for 1st Edition Base Set, all boxes have white logos on the plastic wrap, being Wizards of the Coast for Skyridge and older, and The Pokemon Company from EX Ruby and Sapphire to present day
Market value is $25, and seems fairly stable right now as well, albeit the foil version fetches 10x that, with listings up to $250 at TCGPlayer right now
Pokmon TCG Pocket has a number of missions you can complete both when you begin your collecting career and as you continue to fill out your collection of cards
Legality depends on the tournament format -- Borrowing 100,000 Arrows can be legal in some formats and banned or restricted in others