Shopify Collective

I love the opportunity to add more product options for my customers. It really fills the gaps of products that I am not able to carry myself especially high value and consumable products. I am on both sides of collective as a vendor and user. However collective needs to hold the suppliers responsible more. I have run into this issue a few times now and just had a big one with one of the suppliers who had thousands of products listed that I added to my store. These were all products that my customers were very interested in and I spent over a week adding all the products, featuring them on my website and creating collections for them. I started selling them and the vendor filled the first order and then rapidly refused to fulfill several orders in a row. I messaged them and they basically said they didn't want to be on collective any more (the brand was still available but did eventually get removed). I then had to message multiple customers the reason why their orders were cancelled and I had to pay the credit card processing fees.
I strongly feel that if a brand chooses to be a part of collective they should be required to fulfill all orders (unless they run out of product) and should be required to pay any and all fees when they cancel an order on their end. I would also love to see a little accountability where they sign on to be a part of collective for a set amount of time. I spent so much time integrating things on my site and it was beyond frustrating that a week after I added them I had to delete everything.
I also had a customer try to do a return and collective gave me two different instructions as to how the return was handled and I ended up having to google search it because the instructions were not correct and I gave the customer a refund (because collective said it was approved and that was the next step) not realizing it was my responsibility to contact the vendor to request a refund and then I was responsible for forwarding a shipping label email to the customer.
As a vendor on collective I have had a few sales, but nothing too exciting. A lot of random fake stores add your products and then are closed shortly after.