Hi,
We should not need to create a template to add a signature in a meeting invite. This should be a basic feature that should be possible when you make updated programs. I'm also wondering if you've tested the brightness of the colors of the new one? I experince it a lot more challenging for my eyes. It's important that the colors you use are ergonomic as you are looking at it for 8hs / day.
I hope you understand our concern even though I must say I'm very disappointed that this hasn't been fix it for 1.5 years. I interpret it as if it won't be fixed and therefore I change back to the "old" version.