You could revert Aya since that doesn't look like it's based on a manga panel but a couple of the others I changed were better quality pictures of the original manga panels we had there (Speedwagon, Wang Chan, Kars, Gray Fly, Captain Tennille, Mannish Boy, etc).
Asked Kaiser on discord and he said the ones drawn by Araki are fine.
More specifically, I think the manga panels that we were already manually cropping might as well be replaced with something a bit more professionally done.
Having taken a closer look at these though, I'm pretty sure quite a few of them are the base panels with parts meticulously added in, as Nabu mebtioned. Like for Captain Tenille, I'm pretty sure the head portion of his picture is the only thing from the manga. The entire torso section I assume was drawn from scratch by a different artist. Using something like that seems a bit disingenuous, which is why only a few of these that actually work. Kars, for example, is basically the manga panel outside the thigh region, which should be cropped off.
I take their picture from their banner in the announcements and then cut out the background. Then I put that on top of one of the other icons (depending on their element/colour) and use clone stamp in Photoshop to fix the diamonds in the background.
I get what you mean, but lyrics for covers would be considered fan-made content which isn't typically allowed on wikis like this (aside from the internet culture page here).
It would just end up being subjective if we started allowing that. For example, if someone made lyrics for a cover and wanted to include it on a music page, and then someone else made different lyrics for the same song and replaces the former, we can't pick sides about which one fits more. Unless an official English song is released later, it's better to just keep the original Japanese lyrics and a translation for people to understand the meaning.