Would anyone be interested in creating an Aced version of a Decurive-like mod? The author of Decursive has stopped development and unfortunately the recent versions are plagued with bugs and performance issues.
I hate to say it, but blizzard counters the inability to disable this functionality by making it downright required in raids. Their favority mechanism is to AoE curse everyone in battle and require more though by the decurser. They're making decurses more expensive and giving more times where the debuff is actually DESIRABLE (Hakkar anyone?).
In the end I think the solution is quite simple, they gave multi-target buffs that require a reagent, why not a fairly mana-intensive multi-target decurse that takes a reagent? Sure a druid could remove all the poisons from the whole raid in 8 casts, but it'll cost him 8 reagents and 80% of his mana. Simple enough.
As for the willingness, don't speak for all of Ace moon. I would write a mod like this if I didn't have a million others floating around I wanted to do too. Of course, I tend more towards the "simple visual summary, click a target to decurse" method like needylist over the "push one button and the game picks your target for you" method. I don't mind mods making granular spell choices (which rank to cast), I'm personally against mods making the bigger decitions (what target, which heal spell, etc).
I still think costly multi-target decurses are the real answer.