1. it has more of a brittle look than the real pretty leica lenses
2. its prohibitively expensive
3. the focal lenths are not different enough
4. one single zeiss 18 is a bona fide replacement for the whole lens
5. the finder is like mounting Darth Vader's battle fleet star destroyer onto your camera
6. who needs 18 when you have 16 ?
7. who needs 16 when you have 18 ?
8. Mounting filters requires even MORE money to be spent
9. By the time you adjust finder, select WATE menu etc... I could have performed about six different lens changes
10. its big
11. its F4, fine if you are shooting solar winds up on the surface of the sun
in summary: zeiss 18 + 24 elmarit + 28 cron instead
Your comments reveal that you really haven't tried or even held a WATE.
1. The WATE is certainly less brittle than the Leica average. But the front glass is vulnerable and demands that either the sun shade or the filter is being applied.
2. Besides the Noctilux, the WATE is a unique lense since it is the widest Leica lense offered. It also offers 'three focal lengths in one' and as such is a complicated construction that costs - some - money to design and make.
The M8/WATE is the best digital wide angle combo I know of. The Leica WATE is decidedly better than Canon's 16-35 mm 2,8L II in combo with 1Ds II, a combination which costs the same as M8/WATE combination, interestingly enough. Sure, the WATE is expensive, but matches the price of competition.
3. On a M8 the WATE offers picture angles similar to 18, 21 and 28 mm, - three far different angles of views, and focal lengths with quite different effects. It is very practical to have all these three focal lengths in one and the same lense.
4. I am a great fan of Carl Zeiss lenses, and indeed, the ZM 18 mm 4,0 is an excellent alternative to the WATE. The ZM 18 mm 4,0 is very sharp in the center while the WATE offers high resolution evenly over the total picture surface; as such a more modern design. The WATE comes with coding included while the ZM 18 mm 4,0 demands that you code yourself. Or work over the files with 'Cornerfix' etc. Nor is the ZM 18 mm 4,0 rangefinder coupled. Not that much of an issue, but I find that my WATE pictures comes out much sharper than my Voigtländer 15 mm just because the WATE pictures is correctly focused. - Except for that the 15 mm Super Wide is a markedly inferior design.
5. Yes, the Frankenfinder is large and bulky, but I find the libelle very usefull and use it often even on my Canon. And I use the M8/WATE with the Voigtländer 21 mm viewfinder, the most compact there is. Leica must meet the demands of the professional photographer. Not just 'tourists'.
" 6. who needs 18 when you have 16 ?
7. who needs 16 when you have 18 ?"
- This you will fast find an answer to when you see the result of the use of these two focal lengths. Rather, on the M8 it is the difference between 18 and 21 mm you see. Just as significant.
8. Sure, the filter should be included. Implicitly, what you are pointing at, again, is the 'high price' of the WATE. Sure, the price is high, but it is competitive as I pointed to above.
9. When you switch on the M8 when the WATE is mounted, the camera asks you what focal length you want to shoot with. When you have chosen this, you are ready.
10. Not really. But I miss a good sun shade when I use the WATE with the filter. - Which would have turned into a monster. Without the filter the WATE is quite compact.
11. A faster wide angle lense would have to be larger and even more expensive. Further, it would offer a narrow DOF at larger apartures, - not always an advantage. I prefer larger apartures on my SLR-cameras because they offers brighter viewfinders and more reliable AF. This is not an issue on a Leica M camera. The aparture 4,0 - nor the somewhat limited low-noice/high-ISO properties of the M8 has limited me from taking cityscapes in marginal light.
The ZM 18 mm 4,0 is indeed a cheaper alternative together with Voigtländer 15 mm 4,5 - far inferior to the WATE however, and a 21 mm of some sort. How a 24 mm and a 28 mm - which gives a picture angle like a 28 and a 35 mm is complimentary to the WATE is beond me.
The greatest downside of the WATE, to me, except for the price, is the distortion which is very pronounced and at least 'just as bad' as on Canon 16-35 mm 2,8L II. Leica should offer a software fix - included in the price, to this like Hasselblad is doing.