Having a customizable quick tool palette is my #1 request, also agree with KLB, the slider is a pain for selecting smaller more frequently used widths.

▪We can make a bottom slider (that we can swipe left/right). This will allow us to add infinite number of pens.
▪More over we can add an amazing feature to this bottom slider: • Favourite Pens Groups. • a side-button (or side-up/down-slider "that we can swipe up/down") on that bottom slider which will enable us to switch between different favourite-pens-Groups. • Instead of only having one set of favourite pens, we can have multiple sets, each has its pre-defined pens. This will save a lot of time and will help more productivity. • Instead of using a side button on the slider to switch between groups, we can just swipe up/down to switch.
▪I do video tutorials, this will be very helpful while I'm recording the screen not to go to the time wasting steps to switch a color or between a pen or highlighter.

Maybe add a "Favorites" or "User Defaults" where you can save up to so many (3-5?) default pen sizes. Kind of like the recently used colors.

I would like to see the possiblity to add symbols to the toolbar which are shortcuts to tools with custom settings (color, size, ...)

For example I would like to be able to add a blue pen shortcut, and a red pen short cut, and a big green marker shortcut as three different extra symbols, so that I don't have to click through the menu.

Or at least I would like to have a button to revert my tool to the last used one. This would also enable fast switching of tools but wouldn't be customizable and not fit everyones needs. However I think it would be probably easier and faster to implement.

I agree. The slider is fairly jumpy, and even with a S-Pen it's difficult to get down to 0.1 mm increments.

Perhaps another solution is to include a user-input box next to the slider, where users may type-input their desired line thickness.

When I write notes, I regularly use 2 or 3 stroke sizes:

Maybe 0.5mm for body content (the notes)
Maybe 1.0mm for callouts, bullets, secondary headers, etc.
Maybe 1.5mm for section headers

Currently setting stroke size is a pain between the sizes are on a continuum; I have to be precise to get the size I want.

The continuum is cool and I'm not suggesting remove it, but maybe allow the user to set some defaults that can then be toggled between quickly.

Be able to rezise pen and eraser fast, for example by tapping with finger and scrolling with pen at the same time.

Sometimes while writing switching between 2 main colors is needed to work much faster.

even the native s-Note app on Samsung phone have this one. it shouldn't be that hard, please we need this. (btw the best app i used so far, that what makes me put this feedback)

Need this asap

I agree. Switching between different pens and colors can be cumbersome

Drawboard (win apps) offers this function!!
It's really useful!

Create favorite pens, just one or two pens buttom on tool bar for faster writting.

I would love the ability to add (at least, I have a 12.2 tablet so more would be preferable) three boxes with customizable choices like a red underline, blue box .4 blue pen. This way, I could flip from items I use all the time much quicker by just using tapping the box I customized to my favorite I presets.

the software is amazing. But i often change color and brush types when i am making a note. It is a bit inconvinient that i should click on the dropdown menu then select what i want. That means 2+ extra clicks before i can do actual editing. In most of the cases I switch between 2 or 3 colors or brush types, can you make a sticky shortcut menu which contains the recently used ones? That will make color changing and tool changing more quickly and make the editing more efficiently.

I've had this same thought a few times. I very regularly use at least two different color pens on a daily basis.

like onenote:
Three default pen buttons. Each with their own color, thickness etc and always visible on the toolbar.
This makes easy switching between pens possible..

Since I am regularly using certain tool combinations like "pen; 0,5 mm; black", and "pen; 0,8 mm; violet" and many others, I would appreciate some kind of "one touch customizable tool kit" where I can save my regularly used settings for tools, and access them with only one touch.
It is like the pencil case you used in school, except you can freely create your own tools the way and in the combination you need them.
Other (for me less likeable but still) way to implement this kind of feature: an automatic list of recently or mostly used tools / tool combinations.

This would make working on notes much faster and easier (and sometimes less bothersome, even though Papyrus is a great app), and also more creative in a certain way.

A list/grid of recently used pressure settings, just like we already have with colors.
It could be icons with the "sample" of that pressure. Do you get me?