I feel stupid, but what exactly does this tool do? :-)
Really, the tool does nothing. However, the user can do many things with it. But it is not something that can be summarized in a comment. But hey, one of the things you can do is the multiple control of routed notes. Maybe this interests you. Imagine that you touch a single button, and Renoise magically writes several notes, on several tracks at once, without moving the cursor. Imagine being able to shoot several phrases in a single action. Imagine that the tool also has a step sequencer. I suppose you've heard about what this is.
You only have to read the User Guide integrated, or a piece of it. See the images and imagine what you can do. You have 16 panels of notes that you can route to tracks and specific instruments. And you can preview the sounds without recording anything. You can also play with chords, configure your MIDI Input, or use FavTouch to trigger favorite notes routed.
Stop feeling stupid. Install the tool and handle it! If you do not see it useful, you can uninstall it later . After your comment, it was me who felt stupid to develop a user guide. My English is not very good, but I think I've done a great job with him. Give the tool a chance and a little patience. When you understand it, you may not want to uninstall it.
If at the end you think the tool is garbage, nothing happens. Unfortunately, we do not all think the same, nor how to approach a specific tool.
Also, If you do not have fun with her, try to find a gem (read section 5.7 of the user guide: 5.7. A lost treasure: find the gem!...). The tool has a hidden panel that is activated "magically" by activating a specific control. Trust me, it is there. If in the end you get bored by not understanding the tool, maybe you'll have fun with this. Probably, this panel will grow in the future.
Those who feel stupid are the ones who in the end have the most fun!