P: Support cataloging PSB files

I've got a large number of photographers and retouchers using my PSB Quick Look plugin who regularly create PSBs with 15 layers or more (the recommended method of doing non-destructive editing with Photoshop). They start with high-resolution images and all those layers cause them to exceed the 2 GB PSD limit and the 4 GB TIFF limit:

50 megapixels * 6 bytes/pixel * 15 layers = 4.5 GB

My Sony A99ii shoots 42MP, I need to switch to TIF if I do major editings on it. The ArIV shoots 61MP and up to 240.8  with pixel shift. That's a lot, even without any major editing.

seanhoyt-
I wasn’t familiar with linked smart objects though. Will try that, see if it’s something that helps. Thanks.

seanhoyt-
It’s easy to exceed the limit doing large abstract composites. I often have over 20 layers, including some smart objects with applied filters and others with masks and multiple adjustment layers. All sized for print at 24”x36”x300ppi. The files get big fast.

Even if it were not minimal, it is something Adobe should have done a long time ago. There's no excuse for not supporting a native Photoshop file format IN Adobe PHOTOSHOP Lightroom. No excuse. 

The engineering effort to accommodate PSBs is minimal: 
https://feedback.photoshop.com/photoshop_family/topics/lightroom_support_cataloging_psb_files?topic-...

I learned this while implementing the PSB Quick Look plugin.

but then it is bigger than the limit much faster. 

Amit - speed it up by unchecking psd compression. It’s 10x faster without.... if you have the disk space.

4GB? Easily? I do hit it but with 20-image pani stitches. Not “easy”. But I’m onboard with psb in LR

I think the complex recoding argument falls down after 8 years, which is now the age of this request. PSB is after all Adobe's own file format and , as Christopher says, modern cameras hit the limit easily.