Long time since I didn't have time to use Synfig; So I've made a little workflow test before to do something more serious, to find out eventual issues first.ScreenshotRender
So first, most important issue for me now is color gamma: I've been confronted with the issue that with default settings, color selector values are very special/different from every other software.
For instance, I use -and even abuse- the desktop color picker on KDE, or gcolor2 on gnome, to select colors from any source, even previous colors from synfig canvas, and paste them where needed using html color code, which is quite fast workflow. But then with Synfig default settings pasted color values are wrong, so I've searched and found out that I had to both deselect "linear color correction" and set gamma to 1 to get good result.
So far so good, until I export: damn, export is at original gamma 2.2! So, with hope, I look at CLI parameters to see if it could save me, find there the wanted "-g" option, but that leads to warning ": Gamma argument is currently ignored" (with the corresponding bug report HERE
That's the biggest issue I have for now, please tell me if there is a solution, and/or if it can be fixed when possible…
Another thing I want to report, but this time it's a feature request (so it can wait, even more as I've a workaround for it… )
As you can notice, I've managed to get a global silhouette outline on the character, but with a big trick - it's made of 9 layers (8 shadow layers and 1 oversampling layer)-, when it would be so easy and more flexible to do it with only one of a layer type meant for this.
It should, like the shadow layer, get the alpha mask of associated layers, fill it with a color, but with an additional "grow" or "extend" parameter, which value define outline thickness, like the grow/shrink selection menu entries in Gimp for instance. So please either create a new layer type like this, or just add the "grow" parameter to shadow layer (if it doesn't break compatibility I'd be fine with that)
That's all for now, I hope this report is useful…
More to come soon! ;.)