This lets you open up the sleeve easier
Regardless, it would be bizarre if a non-featured match was more likely to involve asking spectators because of feature matches having a policy of judges not questioning spectators that were only able to see because it was televised. My opponent from that round came up to me the next day and apologized
"My 61st card is a tutor target for Trophy Mage, and it's better to have it in my deck so I can find it than not have it at all." That's doubly making your deck worse: you're playing a card you apparently don't even want that often and reducing the chance you draw the cards you want more
There was also the case of cards needing to be censored in foreign markets, due to the different sensibilities of countries such as China
When the last time counter is removed, the second triggered ability of suspend (the one that lets you cast the card) triggers
Having only the frame of this card foiled would make the artwork stand out that much more versus Hey, its all foil! Solution #2: Foil both sides of the card