• Will You Add a Feature That Lets Me Add Custom Filters/Block Page Elements?
No — when I say Wipr has no configuration, I mean it
More likely (yet very unlikely) is that I release a separate app that only does custom blocking.
Note that you’re free to use any number of Content Blockers simultaneously, so you can use Wipr and have another app/extension for your custom rules.
As for why, I don’t think this feature would improve the product, even for the nerdiest of nerds. The pain of managing your custom filters would almost certainly outweigh their benefit. I speak from personal experience!
Not to mention that only a tiny fraction of users will ever use such a feature. I mean, I created a Content Blocker and I barely understand regular expressions.