I can't support this. It's not that it's a bad idea, it's that the slots have decreased enough over the years that they are cheap for those who really work at it. You can buy MC slots easily by just questing for a month.
The Black Friday sale idea isn't plausible for myself. Lumi takes up a lot of funds that I would pass up a slot at discount if it meant getting an extra CW to gift. Increasing the amount of pet slots we can obtain would be great. Over all or on a set date, but that's all I can see Subeta doing. Tbh.

Wow, I didn't think of it like that. I don't quest every day, most of my profits are from my shops. Thanks for the optimism! :D

The beautiful thing is that these slots aren't going anywhere, so you can take your sweet time to go and save up for them.

The third slot is 60M, the fourth one is 80M, the fifth one is 100M and so on. It looks scary at first, but they're really nice long term goals in the end!

Best of luck to you!