While I agree with the general principle that the trade off of runtime for output is often not worth it when you start pushing led's pretty hard, I actually think Fenix have made a very good call on this one. Yes 200 lumens may not be noticably less than 250, but then who's to say 180 would be noticably less than 200 etc, where do you draw the line?
I think that over a 3 hour runtime on Turbo mode is a very good bar to set, and then 110 lumens really is enough for most general situations, in which case no-one would care for a mid-point 200 lumen Turbo anyway.
I am glad they havent included a 1 hour 350 lumen mode or something along those lines, but 3 hours is generally enough not to worry about using up the batteries anyway, and if you only use Turbo on the occasions you genuinely need it, e.g. spotting at a distance, then I think you may be surprised at the difference in useful light that 50 lumens makes, even at that high output..