I very much support this, having it directly in Obsidian.
To add, it would be nice if it syncs the current directory maybe with the directory of the opened file, or at least of the vault.
This is one issue with having such global terminal, which usually does not sync automatically to the current directory.
Related is also: Command Line Interface to open files/folders in Obsidian from the terminal
So when you operate inside the terminal, you can easily open files.
Other things I would usually do in the terminal: Commit changes to Git, rename files, move files, etc.