wasn't an easy choice to make as it was widely used, respected and quoted many other places for sure. we get that and we tried to keep it going.
but in the end with no one to keep it up, it was decided to delete it rather than let it go down in flames which is what would have happened for sure.
if you've never tried to maintain such a thing, i can assure you it is a massive undertaking. it's not just adding new info as you go either. models get updated or changed for various reasons making it's position potentially different so you're constantly checking/reading and adjusting that info for existing models. links get changed all the time so any product page links of other stuff has to be constantly checked and updated regularly to ensure it is accurate.
then you have the newer models coming in which have to be researched and a judgement made on where it belongs. this is not always obvious leading to lots and lots of arguments among not just the forum users but also those maintaining it. throw in the lack of quality professional reviews for many of these new models and then we're just guessing based on available limited info. as we know no brand makes/markets universally good or bad units. so you can't just say "well it's made by ______, so you know it is good/bad"
i'd love nothing more than to bring it back and there are always off and on discussions behind the scenes on how to do it properly. but in the end it's just not happened for many reasons.
i'm less inclined to bring back "tiers" per se but would rather a simpler more obvious description such as "good for top end oc'ed machine" "good for the average gaming pc" "good for an office build" "good for nothing and should be taken out back and shot" lol
but that's just me.