Want to change my overflow (Herbie Question)

[GreenSpottedPuffer]

I hate my overflow...lol. Its ugly and takes up way too much room. My plumbing is all set up with the herbie method. So 2 drains one with a gate valve to restrict flow to match the return pump and the other as an emergency...for those who are not familiar with this method.

Anyways, I want to know what you guys think using just PVC pipes in place of my overflow? So basically one to the height where I want the water level and the emergency would actually just stay as it is. Basically I guess the PVC on the main drain would act as a very small overflow. I don't see why this wouldn't work but am I forgetting something?

I know the main downside is surface skimming but are there others?

The surface water in my tank is very agitated and I think that will help a lot with keeping to much organics from forming on the top. Actually my overflow now is toothless, and doesn't seem do the best job of surface skimming as it is anyways.