>>719796798
Most of the good series are dead, yes. Aka: Metroid, and Castlevania.
>B-but Dread?!
Solid game, but lets not pretend that Metroid is alive and well as a series as a result.
>>719796829
To me it's mostly the lack of interesting movement options. You get dash and double jump and that's pretty much it (and I guess abusing the ghosts for skips is neat) but movement never stops feeling awkward and sluggish, which isn't helped by most of the combat feeling very tedious. Ender Magnolia was much better for this since if you mastered air combos you could do some pretty interesting skips. Combat also had a lot more options than HK where you're stuck with the nail and no real other weapon options (compare this to Castlevania DS games and it's inadequacy is very stark) Even weapons with similarly limited weapon options like Rabi Ribi still make things more interesting by allowing all sorts of crazy fighting-game style combo strings.
in HK, you've peaked once you figure out how to pogo and combo a basic attack with a spell. It is unironically very souls-like in this regard, where your own skill never really grows beyond very basic attack patterns, and you only really have to learn enemy patterns.