It goes way beyond "poor planning" or using a bad list. That might explain the targeting, but it does not explain the subsequent abuse. The subsequent abuse clearly shows that conservatives were targeted, that it wasn't just that they went about selecting applicants for further scrutiny.
No, it really doesn't, at least based on what we know so far. You're letting the right-wing persecution complex cloud your ability to distinguish fact from innuendo. All we currently have are a handful of anecdotes. We have a lawyer representing several right-wing groups making lots of very loud allegations about the treatment of her clients. She is overtly biased, however, so her claims need to be viewed with skepticism. That does not mean she is certainly lying, only that she may be lying, and at a minimum is almost certainly spinning the story for maximum self benefit.
In addition, we don't yet know what sort of "abuse" was inflicted upon left-wing groups. We do have at least two or three anecdotal stories about left-wing groups who were also subjected to substantial follow-up questioning. Of course at least one of these parties declined to characterize it as abuse, saying he found it thorough but reasonable. Is that because his organization was subjected to less "abusive" follow-up, or is it just that he doesn't wave the gratuitous victim flag? We just don't know yet.
That's the difference between anecdotes and data. Anecdotes are often cherry-picked by people with agendas. Therefore, one cannot draw solid conclusions from them. What we need is data, a thorough, non-partisan review of all organizations targeted, or at least a statistically random sample of them, to collect the data we need to understand how much fire there is behind all the smoke.
Now we're seeing that it wasn't just low level employees, and it wasn't just one or two offices either.
It sounds like it, though even this seems rather vaguely supported. Yes, we've heard (from this same biased attorney?) that her clients received letters from multiple offices. What we haven't seen addressed is whether those offices were initiating anything on their own, or whether they were acting on referrals from the Cincinnati office. For example, perhaps the Cincinnati office contacted the other offices and requested local follow-up to allow more interactive discussion.
There is also the claim that at least one of the letters was "signed" by Lerner. Of course they also concede that it appeared to be a stamped signature rather than something personally signed. In the business and government world, there's lots of bulk correspondence generated automatically, with reproduction signatures. Is that what happened in this case? We don't know yet. All we have is an unsubstantiated allegation.
In short, my point remains that we need a thorough investigation to separate fact from allegation. Right now, from my perspective, we still have far more smoke than substance. I absolutely agree we need to get to the truth so we can prevent future instances of partisan targeting.