The laziness is not in the new storyline stuff. Filling in gaps, etc.
The lazy stuff was in the character creation. From half assing a good portion of the cast in UC, mainly the main characters that already had great voice actors, to reusing gameplay models that weren't very fitting, simply because they though, and are apparently right, that most wouldn't care.
I know I'm a little overly picky and all, but I'm not the only one that noticed and was bugged by that. I mean, even another user here mentioned not liking how they reused the RE1 mansion in the CVX section of DSC. Why not use the Spencer Mansion from the REmake...? Lazy.
Like I said, not everything, but enough to where it's worth mentioning.
The music was great, story, terrific, although it ruined certain ones, like RE3. The new stuff is what is worth mentioning though, the great stuff. The extra stuff from the games we already know, as well as the newer missions, TALOS and Javier.