remarkable-stylus VS recept

At least with the ddvk method, you just select the "erase selection" tool normally (then switch back to the pen), and the button then activates whatever eraser tool is selected.

I've never used it but you might find it helpful https://github.com/ddvk/remarkable-stylus

You lose the secondary button which is on the All-star EMR pen, which with this hack can be used for handy erasing https://github.com/ddvk/remarkable-stylus

https://github.com/ddvk/remarkable-stylus - enables the eraser button on Lamy and Samsung EMR pens.

If you use this hack, a short press of the button switches between the two most recent pens. The stylus must be close to the screen but not currently writting.

As with everything about this tablet, there is a DIY solution: https://github.com/funkey/recept/

What kick started my thought process for this was the tool reCept which fixed the lagged line issue that used to plague the RM2. I read through his code to get an idea how it worked, and then used this page from the wiki to help fill in the blanks.

I was complaining to my co-workers lately that we still haven't found a decent virtual whiteboard to discuss things on. Since several of us now have Remarkables, I thought it would be interesting to use them. Since Funkey's jitter fix we know how to intercept input events from the pen.

Maybe this could help you out https://github.com/funkey/recept/

GitHub - funkey/recept: Pen event interception for line smoothing on the reMarkable 2 tablet

Re: jagged lines, by chance did you try the ReCept hack: https://github.com/funkey/recept

This https://github.com/funkey/recept/ should be a good starting point.