Hey I did that feedback thing you told about, no it didn't help my cpu, and no it didn't stop iPhoto from being useless in regards to face recognition mandatory feature.
It's a shame that your only options are to either buy Aperture or submit feedback, at the very least you could provide a good suggestion why this feature should be on?!?!
I have the app I need to do all I want with my photos in terms of editing, I just need a library to check, organise my photos, faster than loading RAW pictures. It's not Aperture. It's just unfortunate that my app of choice doesn't have a library feature, it would prevent me from having to write here.
By the way I had a look at your iPhoto and file management... Reference Library all the way, but hey I'm a noob that won't trust +30000 RAW photos in just one huge database to call it a library that tries to find faces on landscapes.
Now, getting on my feet and tell you something you should be saying too for starters, In My Humble Opinion:
In My Humble Opinion, Face recognition is useless, I did my feedback on your suggestion, lets just hope...
In My Humble Opinion, Managed Library is just a marketing scheme into Aperture, so it seems it's working for you...
In My Humble Opinion, Managed Library presents a huge data loss risk, professionally and personally speaking, here is what I do, In my humble opinion, I have a single reference library, I manage my own files, they are not all in the same drive, some of my most favourite photos are even duplicated in separate hard drives, my own files, not multiple "managed libraries" like one could advise, just the files I want/love/need/whatever, call me a noob, i prefer to keep my work on my hands.
In My Humble Opinion my feedback on iPhoto was in favour of an issue around face smart album feature, allowing users to turn it off it's way to simple to call it a request for enhancement feedback, like what you can do with "places smart album"? 😉.
Maybe I'll try that command-line trick while feedback doesn't get any reply...if any.
Cheers