I wrote this article precisely because, for once, I found a system that actually sticks. I have been using it every day for six months, whereas other systems would last a week at most.
Yes, it is possible, but if you print directly from the browser, you cannot tell the printer when to cut.
In my case, I generate multiple images and tell the printer when to cut. I also have another version without images. The difference between the two is that the version without images is two to three times faster to print.
I completely relate to what you are saying. I do not use Markdown, but I use Notion because I find it just a little more convenient. But with my software, I am actually trying to reach the same speed as Markdown for advanced users. I have coded dozens of keyboard shortcuts to handle all the actions.
The keyboard shortcuts should help a lot! If you can nail navigation from the keyboard, it'll go a long way to make the UX feel breezy.
I made a corkboard/index cards app for Mac and iOS called Card Buddy and I spent a lot of time working on the keyboard navigation there and it made a huge difference on the feeling of fluidity. For instance, even while you're editing a card, you can navigate to a neighboring cell and start editing it just through the arrow keys. That makes it super fast to jot down lots of notes right away. I noticed a lot of other apps would require you to move the mouse and double-click to edit somewhere else and even that friction makes those apps feel sluggish.
Yes, the feeling of having made progress is so important. That little thing can sometimes be enough to lift our spirits on a day when we are not feeling our best.