ability to add more filter lists

[terd-dd]

important ad-blocking lists are missing,
for example:

uBlock filters – Ads
uBlock filters – Quick fixes

those are crucial for blocking YouTube ads, but they aren't available and there is no option to add a new list

[dascgit]

@terd-dd You can. Click on Settings --> Custom Filters.
Can you also please provide the links to this two ad-blocking lists?

[terd-dd]

https://github.com/uBlockOrigin/uAssets/tree/master/filters

it may also not work for blocking YouTube ads anyway because they not only block URLs but also modify parts of the actual site.