The only things I don't like about the new editor are, annoyingly, things that I find very important.

Classic theme is because the contrast is all wrong, even if it does look polished now as a result.
And online editors may not be good enough for very large projects.
But those problems are only minor compared to the new paint editor.

No automatic centering nor a way to place it accurately.
Colour Pallete has the colours arranged in an illogical order, and I can't seem to find a full pallete anywhere.
Pixel art was just silly to remove
Line thickness has no way to be set accurately.

I hear that bitmap support is coming, at least.
#relievedbecauseirelyonpixelperfectediting

complex
The only things I don't like about the new editor are, annoyingly, things that I find very important.
Pixel art was just silly to remove

Working with vectors might take some getting used for experienced Scratchers, but please keep in mind that this decision was not taken lightly by the Scratch Team. In the long-term, for many reasons mentioned throughout this thread, having vector capabilities is a major advantage for Scratch as a platform.