Plenty of coins have anon or are implementing it, I think the fad will be over soon or at least it won't be anything to make a coin stand out. I question the value of it beyond having a few coins that specialise in it. I mean look at how people pay for things outside of cyrpto, it obviously doesn't mean much to most people.
If it's a truly unique solution, I think it's worth adding. Perhaps have it optional in the wallet. If it's just another mixer, or some grand plan that may work in theory, but nobody knows if it does in practice, I'd pass on it.
I think part of the problem isn't anonymity, just that there are too many coins trying to do it right now, and a lot of them appear to be scams or quick money grabs. They saw Drk shooting up, who I should add has been working on a solution for like half a year, and decided to tack on some anon feature which may or may not even exist. Coins said things like they'll add zerocoin functionality (while zerocoin doesn't exist), one stated they were adding DarkSend (not even opensourced yet), while some others have anon claims, but it's rather iffy if they even work.
So yeah, if it's just some generic solution a million other coins are using, and not better than existing coins, best to pass on it. If it's a unique coding solution, sure, why not add it?
