That’s half of what he asked for, the other one isn’t currently a feature on ROBLOX.
Also you can change your hotkey for commenting by going to File > Advanced > Customize Shortcuts and search for “Toggle Comment Selection” and change it from there. I use CMD (CTRL) + / for commenting, since that’s what Sublime Text 3 uses.
Having one key combo to toggle is arguably better than having two key combos since double nesting comments isn’t a common use case. I mean. My code isn’t that bad.
I think other editors do this too, but I love Sublime Text’s comment feature. You just kinda highlight parts of each line you want to comment out and do ctrl+/
I made a similar post about shortcuts I miss (from Eclipse) 2 years ago, that just so happened to get a response on it today as well. Not sure if that’s a coincidence or related to this. Here’s the post: