just a quick sidenote that the number of available cards on the market for 2070, 2080ti, etc should not dictate the number of slots of the case. instead it should probably be better if it is based on the market percentage by which the cards hold for each category. i.e.: users looking at the rtx2080ti would most likely go for more well known brands such as the Asus Strix ROG RTX2080ti instead of cards like PowerColor or Palit.