This addons works just fine and has the most important things it needs (and then some - I already find it too bloated compared to my original vision for it). I don't think it's fair of you to rate the addon itself lowly just because I don't implement all the non-essential extra fluff people open up request tickets on gitlab for. Ratings are supposed to indicate/be based on the quality of the addon as it is right now, not be used as a knife to put pressure on devs to add extra features you want. If it works fine for its intended use and has some extra bells and whistles, you can't justify 1 star.

Glad you like it so much and thanks for the kind words. I do wish I had more time and energy to work on my addons, but work has been so draining for me the last 2 years I just can't do what I have to do anymore. I'm not sure when I'll ever get around to fixing all the issues with DID anymore, even though it's honestly sinking below my own quality demands by now.

Unfortunately not all websites are the same, and some use all kinds of layout tricks that prevent addons like this from realistically working, or even specifically protect their images from copying tools. I feel like you're trying to paint this as a shortcoming or flaw, but that's a little unfair. Webdevs will always find ways to hinder tools like this, on.purpose or coincidentally. There is no addon that works perfectly for all.

Update: yes, of course any visible image is by definition available to download, the problem is with websites doing all kinds of weird-ass shit to satisfy their sometimes arbitrary layout decisions and completely violating web standards in the process, or just using complicated css nonsense that can completely throw tools like this off-track. My addon is able to work through most of those things, but you can't expect 1 generic little piece of code to be able to perfectly circumvent everything a human dev can come up with that makes its life harder. Write an algorithm yourself and submit it in a PR, Mr. Perfect, or be satisfied that it works 99% of the time.