I think it depends on the size of the palette for eyeshadows–if it’s a quad, I don’t particularly want a highlighter. I think with perhaps a few staple quads that are geared around a smoky eye or neutral eye, having everything in one go is helpful, but often, I’d rather four interesting colors. In larger palettes, I think there is room to have a bit of everything. For face palettes, again, smaller palettes don’t need everything, but I do like a highlighter/blush combo. The smaller the palette, the less broad I want it to be; the larger the palette, the more comprehensive I’d want it to be.