I read about the impending demise of corporate hangers in ship ages ago, so I was somewhat surprised to see a devblog only just appearing now. CCP tell us they are making this change to remove more unnecessary complexity from the system, which is something I fully support. As an added bonus, as I sometimes move stuff around in an Orca, I really like this change.
I never understood the reasons behind splitting up the Orca into so many different compartments when the Orca pilot is able to do what he wants with the contents of any of them. For me it has only ever meant I look through several tabs before finding what I'm actually looking for. Whenever I've dealt with accessing other peoples' Orcas they generally tell me what I'm looking for is 'probably in tab X but just rake around'.
For the few cases where access restrictions are required CCP have put more cargo containers sizes into New Eden. An Orca corporate hanger space is 40,000 m3 and CCP have conveniently added 10,000 m3 and 5,000 m3 containers. If you do want to restrict access simply put in three of the 10k m3 containers and one 5k m3 container to hold everything in. Doing it this way leaves 5k m3 of space where you can move stuff you want people to access. Simples.
Now, dear CCP, there are a handful of other places the breakdown into corporate hanger tabs needs removed. Whilst these corp tabs are essential in many POS modules, there are others where they are not needed. Eliminate these from mobile laboratories and their ilk and suddenly it becomes possible for alliance members to use labs for copying or invention. Eliminate them from other POS modules and suddenly reverse engineering and even manufacturing could be opened up.
If it was possible to remove the corp hangers from the Orca it could just be as doable to remove them from a handful more places.