Upvoting after coming back and playing through the D1 Collection on PSN. As someone who moved to PC for Destiny 2 like 6 months ago, it really sucks having to shell out cash just for multiplayer. You don't even need to do much. Just port it directly and allow for custom keybinds and you're going to sell tons of copies. Yes, upgrading it to be 60+ FPS, adding mantling, removing the sprint cooldown would be good QOL, but the game is honestly beautiful and fun as-is.