1 - What do you think of one "special layer" to define the color of the background?
Every new document already has 2 layers:
Layer 2 - The default selected layer
Layer1 - filled automatically with white
I know we can select the bottom layer, then click the bucket fill, then select the color, then click on the image to change the "background layer color", then click on another layer, then select another color, then click on the brush tool, but that's a lot of steps to define a background color and keep drawing
Sketchbook, clip studio paint, and procreate, all of them have this "special layer" (which is converted into a regular flat layer when we export to psd for example). With one click on this special layer, the color wheel is opened and with another click, we define the color - Done. Aside from gains in speed and simplicity, maybe this "special layer" can use less memory compared to a regular layer pre-filled with color, allowing one extra layer in the iPad?
2 - Visual bug: When we use the light theme, the transparent color represented in the layer thumbnail background is too dark, maybe the color representing the "transparent" in the thumbnail can use the same tone of gray of the interface? A light gray thumbnail background when we use the light theme and a dark gray thumbnail background when we use the dark theme?
3 - We need an option to "clear" a layer, keeping the name, blending mode, and opacity, and just deleting everything inside the layer, it's faster than deleting the layer, creating another one, renaming it, and readjusting the blending mode/opacity. Maybe a "clear layer" option in the lateral menu, opened when we "click" the layer, or maybe a "clear" button when we swipe left the layer? Obviously, we need the "clear layer" in the drop-down layer menu as well, not to mention, the ability to put this "clear layer" in the quick menu too if someone needs it. Maybe this "clear layer" can be mapped to a special gesture too? That "3 fingers right and left gesture" in procreate is interesting
4 - We can use a switch in the layer panel to "compact" the layer panel (showing only big thumbnails) for a workflow where we don't need to see the names of the layers. All the advanced options like opacity, blending and the strip of icons at the base of the layer panel, can be accessed with a click on the thumbnail when we are in "compact mode". A "visibility" and a "lock" icon over the big thumbnail can be handy when we are in this compact mode (like the icons we have in the sketchbook layer stripe)
An option in Artstudio / Preferences / Interface to adjust the size of the layer thumbnail in the compact mode would be interesting. Since the "compact mode" is meant to be super clean and compact, a slider in the compact layer to define the thumbnail size would be against the concept
Or maybe, instead of changing the size of the layer thumbnail in compact mode using the preferences menu, we can do it visually, the thumbnails can increase in size while we are in compact mode if we can "stretch" the panel to the side, making the panel not only taller but wider too - maybe dragging from the corner of the panel?