Making it drain quickly with a K-7124 pop-up drain for vessels.
A vessel lav without the overflow will not drain well unless the drain opening allows a lot of air through.
The old standard grid drains for pubic bathrooms used to work because the lav had an overflow near the top, allowing air to pull through. The small holes of a grid drain tend to stick the water and the basin fills up instead of quickly draining out.
Some drains are made for this. One way is a pop up drain that gets high enough to allow air to pull through. Come make an domed and elongated grid drain that gets high enough to allow some air through. I prefer the drains that pop up fairly high.
The pop-up drain gets high enough.