I found deck-building to be one of the most engaging parts of MTG and other CCGs, which is another reason why I haven't been very interested in these annual releases. You're right about these not really being P2W though. That's more MTG Online's territory.
"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts." -- Bertrand Russell (I think...)