One of the things that's great about Wes Anderson is that despite the fact that his films are superficially similar (and, well, not just superficially in many ways), you have to judge each one on its own - and everyone will have a different opinion.
I thought Bottle Rocket was nigh-unwatchable. Royal Tenenbaums is wonderful art - a masterwork, truly - but not really a favorite of mine, and more than a bit cloying at times.
The Life Aquatic is a wonderful absurdist comedy, but the family theme is really not well explored there (as it is so well in Royal Tenenbaums) and it ends up ringing hollow to me. Lots to like about it, but not a masterpiece.
Same with Darjeeling Limited, which has a rather inane plot (they literally lose their emotional baggage at the end), but I absolutely love that film for its atmosphere (lifted with great reverence from 50's and 60's era Bollywood, but with a distinctive Anderson touch) and the characters and the acting - it's my favorite from him.
Rushmore is fantastic... nothing bad to say about that one Perhaps not surprisingly, other than Bottle Rocket it's the least distinctively visually Anderson-like, which seems to allow more people to like it who don't like the distinctive look and feel of the later films.
Moonrise Kingdom is wonderful too, and turning his usual themes of family, outsiderness, etc. on to kids was a great move. The atmosphere again takes a starring role, along with absurdist comedy and special effects that sometimes go a little over the top - like Anderson was parodying himself, I thought. I'm not sure it's going to hold up as well as his other films over time (it feels kind of trendy, even though Anderson's earlier films are part of what sparked the trends).
I am excited for this new one because it again looks like he is parodying himself a bit, but he's also combining the endearingness of Moonrise Kingdom with the relative realism and constraint of Darjeeling Limited, with the quality of character development from Rushmore and Royal Tenenbaums. And despite what some think because of the obvious similarities, he does make major strides in his style and approach with each new film, and it's very clear from the trailer that this one is no different.
@Donald_Petersen I think most fans find the dollhouse diorama aspect to be part of what's so endearing. The stories are compartmentalized not just internally, but in relation to the rest of the world - he's created his own world and instead of it feeling like a fake fantasy world as in most movies, it feels real (for at least as long as the film is playing). I get a saccharine aftertaste from his films too, but usually I'm OK with it, or can at least laugh at how dumb the endings are sometimes. I don't want these movies to end, so the often-bad endings don't matter