I have seen different aproaches for sheva na and qamats qatan indictions.
1. A mark above (a circle, MAGEN DAVID or a Rafe) the letter
2. A bolder (somtimes squer) Sheva than the useal.
As a type designer a don't like the aproach of using uncommon symbols.
and more so misusing a symbol that indicates RAFE for indicating Sheva Na
As a designer i don't like the bolder or squer sheva that makes the text look not good.
in this discotion I would like to hear your opinions about this matter with tour reasoning.
Or in simple words
What in your opinion is the best way of indicating Sheva na, Qamats Qatan & dagesh Hazaq.