Back in 2003 I ordered my Tama Starclassic Maple kit with my 14" and 16" "floor" toms as suspended toms with Star-Cast mounts (as was the fashion in the late 90s/early 2000s), which I mounted off my rack. As they were suspended toms and the whole FAST/Accel depths were still the thing at the time, the 14" has an 11" depth and the 16" has a 13" depth.
After about 5 years, I gave up trying to get used to them being a little further out from my right side, and decided I would non-invasively convert them to floor toms, using the WorldMax DSS Floor Tom Isolation mounts. Only then did it start to dawn on me that they're actually pretty shallow.
That being said, I find that I actually really like that they're shallower because they're a bit easier to tune to a lower note without the sustain being an issue under microphones. Plus, there is less need for muffling when I need to please a studio engineer that would normally complain that the floor toms ring out forever. The less I have to do to make the engineer happy, the better!