A:AnswerIt's the second revision. They may have changed a few things between Rev 1 and Rev 2 but the biggest change and the main purpose was to add LHR to limit it's mining capabilities.
A:AnswerI have not noticed any sag after a year. If you're worried, any bracket should work so long as it fits dimension wise. The shroud has a weird angle they makes it sort of look look like sad, but it's actually just the not-great alignment of the shroud with the actual PCIe connector.
A:AnswerSo with the new RTX 4000 series coming out (we don't know yet, most likely mid-late 2022), the prices of the 3000 series and 2000 series will drop and will SLOWLY come back in stock in mid-late 2022.