All right, I've got all four boxes this morning. Larry 7 is not included 🙁 All collections are in standard small boxes. The artwork seems to be rehash of the past big box collections to the point that Police Quest box says "Special limited edition with 4 products in one box" -- yeah, right, there are so many edition around! Overall, I don't have any problems with exterior appearance. Inside each box is one (in case of King's Quest - two) CD in paper sleeve and a single slip of paper describing some problem with KQ colleciton installer. Apparently, that one is broken and does not handle two CDs well. Nice work, QA team! Optimists among us can treat that as an old-school touch 😉
Now, DOSBox. The version included is 0.63 🙁 The emulator is preconfigured to 8000 cycles and dynamic core. Fullscreen 1024x768 may not be ideal for some games but it's sensible enough. Full DOSBox source code is included on every CD, there is also a copy of GPL. The now-omnipresent license screen in installer starts with rather lengthy paragraph about DOSBox. I would say, they've done what they were expected to do. No copy protection, and CD is not required to play. The installer just extracts games, emulator, and manuals in separate folders. There is very simple launcher which is actually configurable through its own ini file.
Installed game timestamps are seemingly original except for CFG files. Those were modified in March, 2005 (I did not check all of them, but all on Larry collection are like that). So, it did take 18 months for Vivendi to get those collections out. Actually, this is not surprising. Those are budget (low budget) titles and they still had to go through some QA and ESRB certification.
EDIT: The problem with KQ is related to autorun -- the autorun app does not exit after starting setup resulting in odd side effects when switching CDs. Sadly, KQ6 intro is broken, KQ2 message boxes leave traces 🙁