ClearClick is what I'm interested in, not script blocking, at least right now. WebExt version doesn't have it now, but I'm keeping it installed, so it just upgrades when it's added back.

Firefox bypasses right-click blocking when you press shift.

What it doesn't bypass is websites placing transparent things on top of what you wish to right-click on (for example images on Twitter). For that I use Stylus to add CSS and move things away.

It's not about right-click bypassing, it's exactly about transparent things. ClearClick checks whether the image of what you click matches the image of element that's being clicked, shows you the preview and asks if you really want to click it. The best pre-WebExt feature of NoScript.

uMatrix can more closely approximate Noscript. I use it to disable all cookies, scripts, and media unless explicitly allowed.

Are you using Firefox Quantum? I used to whitelist cookies on a per-site basis, but WebExtensions no longer appear to have the necessary access for that, and the built-in settings page is too much of a hassle. Would be interesting if uMatrix has a way to provide the functionality anyway.

I am running Quantum. Follow these instructions: https://github.com/gorhill/uMatrix/wiki/How-to-block-1st-par... but select the cookie column instead and they will be blocked until whitelisted.

I use Cookie Autodelete, it's quite handy.