Great collection, but yes there are a lot of cuts here, and in some of the very best cartoons. The worst offender is the Oscar-winning "The Little Orphan", in which the whole climactic sequence has had to be butchered and re-edited - ruined, really - to accommodate the excision of a blackface gag. (Oddly though, "Mouse Cleaning" and "Casanova Cat", the two cartoons with the most blatant blackface gags, are included unscathed. If you want to get upset by a 50-year old cartoon, there's your chance.)
These cartoons aren't just fun diversions for the kids, they're important pieces of cultural history. We might not like some of the attitudes they reflect, but to pretend they never existed is to invite them to return. If you're afraid of offending anyone, add a disclaimer or a warning on the disc. Publishers of classic cartoons should keep their grubby scissors away from them - especially if they're going to present them as a "Collector's Edition".