Don't get me wrong: Inkscape is huge, it's quite an achievement and I'm glad we got an open source vector app. But everything feels so strange and awkward to use. And when you get further with your project, the input lag gets out of hand. Path effects and filters are cool, but the UI feels... Just strange. And they add even more lag to everything.
Oh and there's also the random crash now and then...
The exporting side could use some love too. You need to fallback to the commandline to export all layers or groups for example. But it's really cumbersome. And for some reason you can't even disable anti-aliased edges and it cuts of filters. Oh well...
Unfortunately I don't have enough time to contribute, sorry. Bought Affinity Designer this week and immediately fell in love. Everything just works, the UI is well thought out and it's snappy.
I don't know: I love open source. For example Blender or Gimp are great and improved massively over the years. We need something like Inkscape, but the current state simply doesn't cut it for me, sorry.