The "Read" file list sounds a lot like Copilot Edit mode, where you manually specify the list of files that are added to the context. Similarly, Copilot has an Ask (Chat) mode that doesn't change the code. One of the downsides of all these new IDEs is that it is difficult, even for the developers of those tools, to have enough time to test out coding in each of their competitors. Also, the switching cost of changing IDEs is pretty high, even if they are forks of the same code base, which makes it hard for the users to really test out all the options. In the long run, I expect that the "larger" IDE providers will purchase the smaller ones. IOW, if you wait long enough, all the good bits will be in Copilot (or maybe Cursor with their new funding).