Let me begin by saying that I've been using Solid explorer since the original beta. I'm also a huge fan of material design. A few months ago when the first file manager came out with material design, I installed it right away. It looked good, great even, but half a minute in, while trying to do some basic copy paste type operation, it hit me just how poorly it functioned as a file manager. It was clunky and unintuitive. Back to the comforting embrace of Solid I went. In the coming weeks, a couple more material style file managers were released, all just as clunky as the next.

Solid Explorer never followed the Holo design scheme to a T, but it fit in with the system. In my opinion, even improved on it. What Solid does best though, is be completely intuitive. It's one of the most full featured managers, yet the easiest to comprehend.

I say this in hopes that you will look to your design language in the original Solid explorer and bring more of it to the new version.

For example, I find the bottom action bar in Solid explorer far more useful than the FAB in the alpha. Another great thing about the bottom action bar, is that (especially on big phones) you can accomplish any action one handed with your thumb. In the alpha, with the overflow in the top right, it becomes a two handed operation.

Another thing your original Solid explorer does that I love, is the dialog that pops up on a long press. It looks great, has the options you need, and functions exactly as one would expect. The copy/move to the adjacent pane is the icing on the cake. It makes moving files around on a phone screen a million times better. The long press dialog is another item that can be done holding the phone with one hand. This too I find far superior to the FAB.

The alpha does look great however, and the hamburger menu is an improvement over the original. As a folder loads the files, the animations swooping up look amazing.

You do amazing work, and I think material design would benefit from your UI implementations