The problem is that when the devs finally take a resource that is useless for end game players and actually give you something to use it on or convert it to they add whatever new limited resource they introduced to the game as a requirement, which makes the whole thing pointless for 6 months to a year or longer until that new resource becomes useless as well.
Like crafting the Orb of Clans or Major Orb of Clans, great I finally have a use for all those thousands of gold keys I have that I never use or maybe I’ll occasionally use the glory keys I stock pile and only use when a new mythic drops, oh wait it also requires cursed runes that only drop from a random gnome enemy that I see just as much as the Mythic Horde Mimic, which is never.
I know some people have great RNG it seems and are already sitting on thousands of cursed runes with nothing to use them on, but I see 1 of those gnomes about once a month, if that.
Or crafting the Greater Treasure, why does this cost 3 Major orbs of Growth? That is a ridiculous resource to use for this. It should cost souls and X amount of the previous rarity treasure troop card just like everything else that has multiple rarity levels, like crafting ingots, trait stones, and medals (though they added in cursed runes again on these).
Crafting Orbs of Chaos, great I can finally use up all those excess chaos shards I have and maybe get an orb of Ascension since those seem to super rare (at least for me), but yet again it requires cursed runes.
Crafting a Vault Key, awesome, I finally have a use for tens of thousands of useless treasure maps I have, but dammit, once again it requires cursed runes.
The problem Gems of War has is that it has to many resources now as the devs keep introducing new ones as a quick cash grab by making it very limited and then charging through nose for it in gems so that you’ll buy it because you can’t get it from the 1 thing that gives it to you for free. So we have this constant cycle of a new extremely limited resource, that becomes obsolete for about 50% of the player base within a few months, so they release a new limited resource, and so on and so on. And when we get to the 3rd or 4th resource in cycle, that 1st resource is now obsolete for the other 50% because they are the ones who decided to not spend any gems on it to get the new content and instead waited for it start popping up through other methods like the Adventure Board (looking at you War Coins).
So I don’t ever expect the devs to revisit an old resource to make it useful again without tying it to whatever their new limited resource of the month is.
And at this point, I would rather they just add in option to where I can sell all my excess resources for gold, even if its a minuscule amount as at least I can put that into guild tasks. Kinda like when you destroy your excess troop cards for souls, which even that became pointless to do for most of the player base. Or as you mentioned earlier break them down into shards or even jewels so that they can be used for other things. Or even allow me to donate them to other guild members or lower level players who would actually need them.