The Monster Manuals are far more disappointing. I'm one of those DMs who feels that 4E is actually a very elegant system, and I applaud the forward thinking put into how 4E has improved running D&D for DMs. But so we get this great system...and a complete dearth of good fluff. The Monster books are nothing more than boring lists of stats.
I think this is probably an intentional choice - WotC have decided to provide the DM with tools, and leave it to them to use those tools as they see fit. It is the DM's job to make the adventures memorable. It is the DM's job to 'skin' the monsters for his campaign.
It's not the model I would have used, but it seems an entirely sensible way to go about things.
As far as monster books go, the standard - besides the 2E Monstrous Compendiums, which were awesome - needs to be Privateer Press' Monsternomicons. Those books are jam-packed with great fluff.
One of the great things about fluff is that it's portable. If you like Pathfinder's Goblins, they'll work just fine with 4e stats. If you really like Golarion, set your 4e campaign there. And so on.
WotC needs to step up its game. Other companies have truly raised the bar with campaign, adventure and monster design, and I think 4E players would enthusiastically embrace an improvement in products to come.
Well, as long as 4e sells well enough for the needs of Hasbro, WotC don't really need to do anything. That said, if there are lessons that they can to improve the product they are offering, then that would be all to the good.
The one thing that disappoints me is that there aren't the same range of 3rd party publishers doing good adventures for 4e. Necromancer, Green Ronin and Paizo are all out of the game, leaving only Goodman and EN Publishing of the 'big names' doing adventures. Since WotC adventures have been very uneven in quality for a long time, that loss of variety is costly.
(Also, I would really like to see someone do a 'campaign in a box' product, comparable to "Castle Whiterock" or the old "Night Below" set. But maybe that's just me.)
1. Were there any good noncampaign specific modules for 2e?
The only ones I know people recommend are Night Below and Gates of Firestorm Peak.
I really liked "The Shattered Circle", and I heard good things about "Axe of the Dwarvish Lords". There were also a couple of "Return to..." adventures late in the edition that I thought I heard good things about, but I may be misremembering.