Yeah, and ironically the package is sorta organized by date, at least through the first few levels. And lotsa people use Aperture to reference their images...that are in the Finder in a date structure. Never understood the hide-the-ball. Be interesting to see what they do with ref/non-ref in Photos.
One other little trick I should have mentioned, although I cannot vouch for how safe it is, is to change the very format of the folder that is the Aperture library. We have said it's a package, and it is, but it actually has the file extension ".aplibarary" not ".pkg". For a quick and possibly dirty way to access it instead of using aliases, as I mentioned, delete the "aplibrary" extension. So "My Aperture Photos.aplibrary" becomes a regular folder "My Aperture Photos" with NO extension. The LR can see it and import it. When you next fire up Aperture, it will not find it, and give you dialog asking which library to open. It won't be there. But you can click "Other..." navigate to the folder "My Aperture Photos" and open it. Seems to work for me, although I have certainly not run through all Aperture functions with it, etc. It might mess with backup as well.
I once had occasion to use this as a way to import even referenced Aperture images into LR. Normally I had just selected my referenced images in Aperture and exported, then imported that folder into LR, and then used LR to move or rename the folders. But I had an old iPhoto (now Aperture) library that had both referenced and non referenced images, and they were scattered, some with same file names, etc. So I ran the consolidate command to move them all into an Aperture library as non-referenced photos, and then used LR to rearrange them. Not sure in every case it would work for folks, but it can be an option.
Also, if you've got a bazillion images maybe look at Photo Mechanic. I've been lusting on it for a while; I hope they take advantage of the Aperture demise and discount it. It's a huge fave with sports and news photographers; I don't know many hobbyists who use it. It's not a cataloger(I guess a browser, technicallyl), and it's not an editor, and it's not a RAW developer (although it has some features that kinda do that). It's mainly for super fast culling, sorting, adding metadata and moving stuff on to the next step, whether that be sending stuff or getting it to an editor like Photoshop. Where it really excels is metadata, and it makes full use of all that IPTC stuff many ignore. It can do search and replace and even has a set of tools for "code replacement" meaning you can set up variables for naming, auto generate captioning, all kinds of stuff. It makes use of Spotlight and can do sophisticated searches. I demo'd it and loved it, and kinda wished I'd been using it all along. The idea is sort of different than Aperture/LR: instead of storing all kinds of stuff in a database or application you make use of the standard metadata conventions of all photo files to organize stuff. Like tagging, it's actually way more flexible and efficient than using virtual or real folders, collections, etc. And universal. EVERYTHING can read photo metadata, even Spotlight in the Finder. I went to Aperture because I found Finder folders inadequate; this might make me go back.