As the title suggest i have 3 suggestions:
1) Analog clock - new block that when rotated emits redstone pulse every set ammount of ticks/seconds/minutes (similar to adjustable repeaters). It would really help with setting up compact redstone clocks, while still being relatively realistic. It also would be nice if ticks, seconds and minutes could be adjusted separately.
2) Encased transporters - regular transporters, but in a form of a block (similar to encased shafts and belts).
3) Cosmetic changes. I understand that right now priority is fixing bugs and adding more features, but some of the building blocks added in this mod definitely need some polish.
Let's start with new granite, diorite and andesite variants. Diorite and andesite brick blocks for some reason use the same texture for the sides(pic. 1) which doesn't blend in with the other diorite and andesite blocks(pic. 2). They also lack wall, stairs and slab variants. While granite bricks do blend in well with other granite blocks, they too lack variants. It also would be nice fo all 3 types to have "indented tile" variant similar to gabbro;
Gabbro blocks are almost perfect, however the gabbro block itself blends in poorly with ofther blocks(pic. 3);
Dolomite bricks have the same problem as diorite and andesite bricks(pic. 4);
While weathered limestone bricks look perfect, the regular limestone bricks again stand out from the rest of the limestone blocks because of the darker large brick in right top corner of the texture(pic. 5);
Scoria lacks the brick wall variant while dark scoria lacks layered and wall variant(pic. 6);
Almost all new brick blocks (except for both limestones and dark scoria) should, in my opinion, have paved and regular variants like gabbro.
And finaly it would be really nice to have colored ornate iron windows and panes.
I hope that all i wrote didn't sound like nitpicking.

I'll just add, that copper shingles looks good, but what roof can you build just from blocks? Please, add some stairs for this block

Thanks for your suggestion, it has been added to our public submission sheet.