How many difficulty settings did you complete the new GoldenEye 007 on? If you only played the first difficulty setting, the game is very "tube-ish"; but once you start on the other difficulty settings, the other objectives do show you different rooms, you may have missed before.
Also, how long did you play the multi-player? I own GoldenEye 007 on the Wii, and Call of Duty: Black Ops on the PS3. I have played Black Ops' multi-player LESS, than GoldenEye's, but had MORE problems with connection issues on the PS3.
I honestly don't have many issues with GoldenEye's multi-player at all, as for connection/lag.
As for "boring missions and level designs", that's a matter of opinion.
I had never watched GoldenEye 007, the movie, before I played the original on the N64. As a matter of fact, I had never watched GoldenEye 007 the movie, until the end of October 2010...basically a month ago.
I didn't realize the differences between the game and movie, but after playing GoldenEye 007 on the Wii, I think that is the game that follows the movie's plot a little closer, and gives it a nice update.
The game isn't perfect(still looking for that one), but it's pretty solid overall.
"It clumps weapons together in a single messy column. There's little reason to stray from using automatic weapons."
I'm on the menu right now, and I don't see what's "messy" about the way they list the weapons. There's only about 20 total, and most aren't unlocked when you first start playing anyway. It's a simple list column, that shows the weapons and their: Damage, Accuracy, Range, and Rate of Fire. A picture of each weapon is shown at the bottom of the screen when it's name is the one highlighted on the list.
Also, if you never used a shotgun in multi-player, you don't know its power...and that's not an "automatic" weapon.
"It's never clear how far away your next rank is."
MENUs! Use them please, :).
I see that I currently need 380 XP to my next rank."
I've enjoyed it more than I thought I would! Freelancing has interested me, but I've never known where to start. As of now, I'm just going to continue blogging and doing what I enjoy."

I don't think SMG2 should be listed just yet, as SMG was out well in advance of SMG2. Also, DKCR and the other two you mentioned haven't even been out a year yet."