Pros:

• Could bring new people to the cryptocurrency market, especially being a card set many countries really care about.
• Low barrier to entry... you don't have to train or breed or fight or explore, it's a simple collection set.
• Allowing other developers to develop games, albums or websites using these collectibles is pretty genius.
• Do not mind the artwork at all.

Cons:

• These things can get slightly addictive, especially when trying to collect a whole team... you might need some super decent negotiating skills to get the cards you want.