I agree that ZOS recognizes there are still issues with the system. According to PTS patch notes, they are adding superior quality master writs, with them being the most common to drop, and making epic quality writs rarer and legendary super rare. They also increased the values of the epic and legendary writs "significantly." So, I assume that blue quality master writs will be worth roughly what the purple ones are right now, with purple being increased to around the same as legendary now and legendary being worth more. This is a guess, since I haven't been able to do any testing.
One of their questions on the feedback thread for this change - yes, they even included a specific thread for this - is essentially "Do you think you'll complete more master writs now?"
So, they know that most players aren't really doing purple master writs or gold ones for that matter. I'm not doing any of the purples, but I do sell them so some players are doing them. I'd rather save the zircons for use in legendary writs when I get one of those that is worth doing. For me, only the swift ones are worth doing. Even with having to spend 20 vouchers, the value is quite a bit higher than triune or harmony or bloodthirsty.
Getting chromium grains is really not that hard, since they drop from daily jewelry crafting writs. The bottleneck is zircon. I'm not getting enough of those to make doing any JC master writ worth it unless I'm doing a very high-value legendary one. Getting blue ones to complete will be much easier and hopefully they will be worth what purple ones are right now.
With all kinds of Master writs, I find the purple level is the one I run out of most quickly. They get used by both Epic and Legendary, but don't drop at an appropriate rate. It looks like the drop rates were calculated as if the top temper was the ONLY one you'd use, rather than having to improve the item all the way up, one level at a time.Getting chromium grains is really not that hard, since they drop from daily jewelry crafting writs. The bottleneck is zircon. I'm not getting enough of those to make doing any JC master writ worth it unless I'm doing a very high-value legendary one. Getting blue ones to complete will be much easier and hopefully they will be worth what purple ones are right now.