I joined JEEP early on when the discord had under 800 people. What I've seen as it's grown is excellent customer service, a willingness for vendors to listen to and take on ideas from customers about what to test and stock, quick delivery, clear communication about stock, good promo prices, and decent prices on most stock. I've also seen a small community grow in the discord/TG groups that's supportive of others in the grey space which you don't see much outside of this place/Peppys.
3rd party testing is growing and Molly and Kelly are being incredibly supportive of it. They've offered our group promo prices on products for those in the test, and they've offered credit for each of the 5 tests we are currently hosting on the server in order to support the tests.
I'd like to see them have more competitive reta prices along with a few others like Semax and snap8 which still run a bit high compared to others. I'd also like to see slightly more in the way of what's on offer (personally, I want 10mg snap8 at similar prices to other vendors, not 5mg for twice the price, and I want thymosin alpha-1 and ahk-cu).