One of the reasons I like this particular fleece over a lot of others is the simplicity. No pockets, no thumb loops, no hood, no plastic zipper pulls, no toggles, no liner.
For a minimalist, it's perfect. Everything you need and nothing you don't. For someone who likes these features, it might come up short, but for me, I don't see the point in a vest with zippered pockets underneath a fleece with zippered pockets and then a jacket, with more pockets, on top of that. Extra weight and bulk.
I am also skeptical of layering R1. Doesn't the grid allow moisture transport? Will grid on top of grid be as efficient as a non-gridded fleece on top of a grid fleece, or just transitioning from a single grid layer to your puffy?
These are almost silly sounding questions, but a layering system, I think, should be a sum of its parts rather than just independent pieces. When I choose stuff, I try not to have redundancies like wicking properties, insulation properties, windproofing, and pockets. These things are usually only needed once, even if your system is four parts.
Sadly, in the consumer driven outdoors market, every piece needs to have every feature....