It would be a BIG benefit for most users if the compression library LZO would be implemented into 7zip.
It is a VERY fast compression format wich is suitable to create fast snapshots or backups of big amount of data.
Integration in 7z format would be very nice.
I totally agree.
The best thing about LZO, is that it is usually IO-bound and not CPU-bound, which means that you can both decrease storage requirements and effectively reduce backup time by quite an amount.
7zip is my favorite tool for compression, so naturally I wish that it also supported LZO, because this is what Proxmox uses to back up virtual machines by default. I'd love to be able to use 7zip's GUI to view these compressed archives.
It shouldn't be too hard to intergrate LZO into 7zip; the code is open source and can likely be found here:
http://www.lzop.org/
+1 for this feature request, I totally agree with Lonnie Best. Users expect 7zip to be the universal decompression tool (and it is, with some missing features like this one!)