I think that layout builder is a must have feature. The problem is it’s not so easy to build.
I think OrmanClark has extraordinary sense when it comes to typography. stmcan has really creative designs and peerapong is really diligent and very hard-working person with a good sense of colors.
This shouldn’t affect performance seriously but definitely will have some impact.
There is only 5 fonts to show how it works.
If you want to protect your ideas from others you must use some sort of device like this
And this one is for advanced