I feel that the mechanics of scrolling need to be reworked. I have to do a number of tweaks to get free scrolling to work as I'd like, as opposed to the default

I feel that the mechanics of scrolling need to be reworked. I have to do a number of tweaks to get free scrolling to work as I'd like, as opposed to the default line-by-line type scrolling. Even line-by-line scrolling has issues, such as not being aligned with the lines of text or block elements on a web page. Scrolling ought to have different control options as well, say ^Scroll scrolls through paragraphs or headings.