The reason why there are so many gold blocks is because the plain Minetest Game has very little uses for gold. So I decided to add more uses, and the most obvious use is excessive luxury. XD There are also some more absurd luxuries, like the gold bed, but luxury is always a little bit absurd and excessive. ;-) So this is intentional.
Snow and ice stuff was added because I felt a need to build great ice castles and igloos. The ice blocks also differ in hardness and in whether they let light through. And I really do think that all snow/ice blocks serve a purpose. I also consider the ice/snow theme to be finished, I will probably not add more blocks to this theme.
I think the problem is not actually too much gold, ice or snow, but too little of everything else to “balance it off”. I really feel there could be more stuff in the papyrus theme, but I ran out of ideas. One idea posted here was a papyrus fence, and I think a papyrus trapdoor might also work, but then I am really out of ideas.
Also, I am probably not removing most blocks because players always have the option to not use them. :P
I don't understand at all why you have problems with the palette. I am using mostly the colors of Minetest Game: gold textures use exactly the colors from the gold block, and snow and ice textures use exactly the colors of snow and ice. Are you using a texture pack or the developer version? In the developer version, the snow texture was changed. Which really pisses me off since it took me quite a time to make my textures work out nicely with the 0.4.14 snow texture, and I have to probably redraw them all again. X_X
But if you're using a texture pack, just ask the texture pack author to add support for this mod. :P I won't probably change the existing blocks that much anymore. My next major goals with this mod are testing, writing item documentation and translations and releasing. After that, I might add more trapdoors.
I might consider splitting this mod into multiple “themed” mods (one for ice, one for gold/luxury, one for papyrus, …) when it exceeds a certain size. But for now I think a split is probably too early.
“Universality” was not really a goal, and yes, not all blocks can be used in all contexts, since most blocks follow some theme. Also, I dislike the stair abuse. :P This mod adds stairs and slabs nonetheless.
But if you do have an idea for an unique new block which fits to the theme of Minetest Game AND it has not already been added by another mod, I might add it.
But avoiding redundancy was a goal with this mod: You won't find a gold door in this mod since ts_doors already adds one. You won't find wooden tiles in this mod since these are already very well covered in [xdecor] and [moreblocks].
Another goal was exploring the API features of Minetest Game: That's why you find many “standard” things lik stairs, slabs, doors, trapdoors, fences, walls, etc.
By the way, this mod is pretty much compatible with More Blocks. It already adds some cool blocks, and I certainly won't repeat them. You can use both mods just fine without duplicates/errors. I even added a few crafting recipes which use recipes from More Blocks. For example, you can use the sweeper to clean the dirty glass. :-)
Overall, your criticisms are too vague for me to convince me to remove any block right now. The gold bed is here to stay. :P But yeah, maybe it could use a better texture and/or mesh. Especially since it is supposed to be a luxury, it should not look like shit. Adding good new beds is harder than it seems.
If many people think a particular block is too terrible and they have a good reason, I might consider removing it. I might also consider removing things which are too superficial or redundant with other things. I am personally not so happy with the white bed; the main reason it was added is to add a bed craft which does not require any dye. As a decoration, it's not so great and might be better in a different mod.