Like it,if there is Serum II,which offer more than one filter will buy it for sure.
That's what stop me - i am filter lover,can't play with just one,it's too simple and sound is not enough colored.
Most of my presets are in sesrial mode,which mean double more character and presence in the mix.
Plus some internal dynamics i develop myself depending on interactions of modules connected in a chain.
Would say after year of playing different synths establish ,that good old serial filter mode/chain is the best ,if a man need really thick sound with a lot character.
Can't do that with one filter only.
So the moment i see two filters in serial mde and some innovation i am Serum user and designer for sure:)
Cheers
