This gave me a little giggle. I get to say "I told ya so!"
Pre-release, Mod Shogun and I had a small back and forth conversation on if we should add the Elder Rune alloy effect text to the Abyssal variant. I argued that players would need it to understand they don't lose the alloy effect when upgrading, while he argued that it would be implied/inherent and also make the tooltip way too long otherwise. All of which are points others have stated in other comments, and all are fair.
Anyway, this post is my ammunition to add it, and I've written up a feedback job for it :)