I find the front of this pattern fascinating. I love how the colours have pooled, I think it looks gorgeous. I think it probably only works because the colours of this yarn look like a storm cloud to me. Super duper interesting that it's on a different gauge where the rib is, and as soon as the stitch could changes for the armhole shaping it changes again. Not everyone loves pooling, of course, so feel free to do it in a plain coloured yarn or Drifter 4ply.
The shapes of the cardigan and the vest seem to work really well, and a lot of people have used the base and taken the lace off. Really great armhole shaping, really great pattern.