You and i have a fairly different idea of history, i'm afraid. And for the record, i've been playing since release.
As far as i'm aware, IAS was cut in half simply because it was too good. At almost any gear level, increasing your attack speed gave significantly more DPS than increasing any other stat - on top of the inherent defensive bonus of being really fast. It was always the obvious choice. Quite simply, it wasn't balanced, and they acted. I'm glad they did, now Int, CC, CD and IAS all benefit my character and increase my DPS in similar but different ways. I don't believe that it had anything to do with any specific wizard build. I'm sure you can look up the official blog post if you want to confirm that.
I know you probably don't want to hear this, but the Spectral Blade and Meteor build from back then was overpowered in the same way that CM/WW is now. The coefficients were too high, and they've been greatly reduced since then, much to the benefit of build variety. Personally i think they may have hit the SB coefficient a little too hard, but they've at least compensated in other ways. Furthermore, the reason WW took time to hit the scene in that build is because the coefficient of WW at the time was 5%. It wasn't until later that it was bumped up to 25% and the signature spell was dropped, and eventually we have the CM/WW of today.
It sounds like you generally don't agree with the changes blizzard have made so far. I actually think they're on the right track, and the game is only getting better. Maybe i'm biased because i have money or something, maybe i'm straight up wrong or just plain different, but i am absolutely okay with being nerfed in the name of overall balance - just as you are perfectly fine with everyone using CM and permafreezing every encounter. I suppose we will just have to agree to disagree. And for the record, the IAS nerf severely damaged the viability of my WD build at the time, which was relying on Ghost Bomb and decent LoH + IAS. I simply accepted that i didn't have the necessary gear to progress with that build (farming act 1 worked fine, however) and moved on to something else. I've since then gone back to that character and had plenty of fun using that same old build, which is now perfectly viable.
At any rate, i may not have all the answers, but i would like to think my feedback on this topic is at the very least relevant to and perhaps even shared by someone out there.
I realise everyone hates nerfs, but honestly, they are quite often the easiest way to achieve balance.
You mean the laziest way.