Looks better to pay for season MAX than store packs

Obviously this is only the case for people who spend money on packs. That being said. Maxing the field pass is basically $25. 

Is your spend $25 in the store, you'll be lucky to get 200K back. 

Maxing the field pass should bring much more than that in rewards. 

The argument of course is that you can max the field pass for free. However, in the time it takes you to do so, the cards you get in a month from doing so, will be worth less than half what they are worth right now.