Hi, and thanks for sharing your listening venture, I hope you won an extra level or two! I think a lot of people
might share your opinions on length and repetition, but they do serve a purpose, as one of my hopes is to
provide a wide range of background music, in a wide range of voicings, to benefit a wide range of moods.
Not being constrained to commercial 'Top 40' time limited attention spans, my hope is that someone having a rough day (or life),
can put on a few songs chosen from many, to change the moments outlook. And those who buy or record some for personal use,
can still easily shorten them using Audacity, to fit x,y, or z. Not that many in the streaming sector have edited a song 
I do have over a hundred songs between 4 and 10 minutes in duration over at Spotify, and the boss has given me permission
to package them in CD sized releases. Or instead of a Greatest Hits release, a Smallest Bits collection? 
There are so many people caught up in grave situations, wars, tragedies, personal battles, medical calamities...
I think most musicians would be delighted if their efforts provide a few people even a subtle temporary
moment of peace. And on the other extreme, music can also be a fun part of celebrations, and motivate the quest
for the daily victories that keep us going.
I have some 4 minute commercial artist favorites that I've smoothly pasted to themselves, to create personal use 20 minute
practice versions, a bit more natural for my practice, than relying on loop-mode in music players.
You might like the Mesonic Escapade album as a game backdrop. Nothing dark or dreary in the audio shadows.
Thanks for sharing your honest views!