No preview of what will actually be printed, before sending print job to printer. Our Canon ip4000 had this feature, which saved lots of wasted paper and ink by cancelling jobs not formatted properly (before sending job to printer).
(1.) saved $$$ hundreds in inkjet tanks already in just two months, as this printer replaced 2 inkjets; We still use one inkjet occasionally for color printing only (photos, charts, webstats, etc.
Also Drum cartridge to replace about every 20,000 pages; Menu lets you know % drum life left; Still costs hundreds $$$ less per year than 2 inkjet printers