I agree with you about useless PRO features.

I loved the 'Mute filters' feature, but they ruined it forcing to use Leo, expressions like "title:HackerNews" are no longer available and LEO is less useful than a simple search by keyword

but... there is a "but", I use Feedly APIs and I love them, I developed apps for myself to aggregate and quickly find informations starting from the feeds, using Feedly is so easy, so I continue to pay for a really small subset of features only to be able to extract info from my RSS feeds