Upload a tweaked existing filter

Hello all. I did a quick serach and I found nothing about his subject.

Let's say I want a nice plaster (like Plaster FX filter) with bricks. I would edit the Plaster FX filter, add a nice existing brick filter and done.
Then lets say my tweaks are worth sharing because it looks great. Is it legit to upload to the library?
If so, how should I credit the original filter makers?

I did read this "No clones or near-clones; new filters must be sufficiently different from other filters in the library." from the guidelines, but sounds unfear to me that I make a paster - brick mixer, which can be awesome, but based 80% on others job.

Thank you.

thank you for your reply