I am quite on board with this change purely for the reasons give by CCP. It is in game data that is not available in game in any form (unlike k-space NPC kills which are visible on a map) and therefore should not be exposed via API.
Where it gets interesting is that this information is primarily used as an intel tool for PvP corporations, most commonly found in C5/C6 space, to determine prime gank times for capital escalation fleets. There are cries of outrage at the removal of this intel which has a not so subtle exposed hatred for PvE or "carebear" organizations. It is hard to even discuss this reaction without resorting to sarcasm and negativity myself at the prevalence of this attitude. At what point did PvE content become the scourge of EVE? I understand that some of the frustration comes from the tactics of these groups, taking advantage of the discovery scanner to safe up on contact as well as using logoff tactics to keep a fleet safe at all times other than when engaging in PvE. But at the same time, when did this also then become the crusade of these outraged organizations to need to remove these PvE organizations from the game and by extension any corporation that does not engage in PvP the way they do?
The lack of vision put forth by the corporations living in the high-level wormholes is a bit fascinating probably brought on by the high level of Goonswarm involvement in this thread. It is not so subtly speculated that the recent eviction of Goonswarm from a wormhole system prompted some kind of discussion at Fanfest with CCP regarding the use of this intel thus instigating this change. Maybe this is true, maybe not, though it doesn't really change the merits of the proposal. It does, however, bring immediate comparisons between how large null-sec operations run and how wormhole corporations do. I suspect that how Goonswarm views wormhole space and its inhabitants is that they appear to operate illogically.
Wormhole corporations are largely based around the idea of single system ownership. A corporation moves into a wormhole of the difficulty appropriate to their size and operate from that location. The higher level corporations tend to run in two camps, PvP or PvE. This dichotomy does not really seem to be that prevalent in null-sec, the space with perhaps the most similarities to wormhole space in terms of raw dynamics (no CONCORD, etc). I have yet to really hear of any wormhole organization (corporation or alliance) that has taken upon itself to control large portions of wormhole space. Some will occupy multiple levels of space, again, most likely based on difficultly in order to match up challenge with pilot skill in PvE, but it does not seem to be in the "meta" for any wormhole entity to begin to take over multiple locations. Why is this?
The first, obvious reason would be the very nature of wormhole space with its ever shifting landscape of connections. This makes force projection, reinforcements, and other logistical functions far more difficult than say in null-sec where jump bridges move ships across the universe at a moments notice. But does this really interfere with occupation? I don't believe it does. If you can build up 100 members to control a single hole, why can you not build up 200 members to control two or a thousand to control ten? Certainly they will not be able to directly influence each other as easily as other organizations but it is also not that uncommon for there to be relatively small distances between wormhole systems and with the prevalence of T3 ships in wormhole space, moving across those distances is not the same challenge it would be for larger capital fleets and who is to say that judicious use of well placed jump clones could not reduce those distances significantly in many situations. This would require scanning chains, finding connections most likely in k-space, and moving fleets through those connections. Ironically, these actions themselves might create plenty of content for PvP organizations simply by being in space.
But maybe that simply isn't the goal of wormhole corporations, yet it seems that those crying foul over how other corporations use the space they have occupied have no desire themselves to occupy that space. They simply don't want others to have it or to use it in the way they are using it. You will hear arguments that occupation by PvE corporations reduces PvP content which is bad. I don't buy that argument. In some ways, the NPC kill intel being available seems to restrict PvP content more than anything because if you do not have to have scouts and fleets out in space looking for targets.
As a lower level wormhole corporation, we engage in PvE more out of necessity than anything. Our income levels are lower, our members are newer, and the income is needed to keep them in the game. We have our PvP moments though will simply disengage from conflicts due to overwhelming force on the other side. Taking yourself out of a fight you cannot win seems to me to be a perfectly valid PvP tactic though I imagine cries of "Carebear!" will ring from PvP corps at that. Yet our members being out engaging in PvE, using our chain to find null-sec exploration or low-sec connections creates plenty of content for the rest of EVE because we are out in space, not logged off or at a POS waiting for NPC kill API to tell us maybe there is someone to attack.
I look forward to this API being removed. I think it will get more pilots into space and maybe, just maybe, spark something in organizations that have the numbers to grow into something more than a wormhole gank squad and actual engage in the empire building that many of us moved into wormhole space specifically for.