To be honest it sounds to me like you’re trying to figure out a way to put a square peg in a round hole, to use a hammer when you should just use a screwdriver.
Each tool in music production is going to have its strengths and weaknesses as well as use cases that are just not appropriate for a specific tool.
If you need reverb, use a reverb. There’s multiple different kinds to play with.
Try not to over complicate things. You’ll just end up wasting a lot of time.
What if it is automatically modulated alongside the playback rate?
What would you like to modulate in the EQ?
To be honest it sounds to me like you’re trying to figure out a way to put a square peg in a round hole, to use a hammer when you should just use a screwdriver.
Each tool in music production is going to have its strengths and weaknesses as well as use cases that are just not appropriate for a specific tool.
If you need reverb, use a reverb. There’s multiple different kinds to play with.
Try not to over complicate things. You’ll just end up wasting a lot of time.