Agreed about the cursors - it's irritating when it's not obvious where the 'pointy end' of the cursor is when the cursor isn't a... dorito... or something, a triangle, because that makes it hard to select or click on anything. I've never used them in my template builds, that I recall, because it's just
one more thing on top of everything else.
Scanlines? Just use those on top of images if you wanna be using them at all.
And like
Kitter Bitters
pointed out, templates need to fit on a mobile screen. People should use a mobile-friendly template for the people that are primarily here on their phones because we should be inclusive and accessible, yeah? I couldn't care less if y'all happen to outnumber our mobile users, or if you don't personally look at the site on mobile, or 'most people aren't going to read this anyway'... because... well, people actually
do look or this wouldn't be an issue. Honestly, it's just a shitty way to look at things and that? That grinds my gears.
For one reason or another, some people only have a mobile phone, or have limited access to a larger screen. At any rate, It's not hard to check if your template is acting appropriately on mobile, or to ask someone to check for you. Just navigate to the same thread where the template is, on mobile. I always do this when working on a new template, even when I'm using a template that I already know is good on mobile. It's habit by now. A good mobile-friendly template doesn't require you to scroll horizontally to view the template and its contents in their entirety. Scrolling sideways on a phone is annoying because mobile web design is primarily up-down scrolling, and that's the standard because well, smartphones are long, not wide and meant to be held that way, in one hand (like the receiver of a phone pretty much always has been!)... so it's
abnormal and irritating to encounter when things don't move, well, fluidly and vertically. It's not what people are used to. Not anymore.
Best part is, it's usually a pretty easy fix to make your templates mobile-friendly and consumes very little time to do it. Any reason given to not do it is honestly a poor excuse.