Funny thing about your ATF levels is that though it may look high or even overfilled when the engine is cold or warm, run it on the highway for about 10 miles and stop on level ground and check the level again. Typically it's lower than you'd expect.
I'm pretty sure that's why the crosshatched area is so large. There are a ton of variables as well including outside air temp and whether or not you have a cooler or not.
My guess is you've added or going to add a cooler, right? Well, typically you can see or guess the capacity of a new cooler and just add in that amount to compensate for the new larger quantity.
As a very general statement I would say yes. But you don't really want to overfill. On my last change & refill I took it out on the highway and went a good 10 miles at 80 - 85mph (probably overkill) and pulled in to a rest area & checked the fluid (engine running, etc) I then filled it up to about 3/4 of the way up the cross hatched area figuring that it was a 70 degree day and that I had been driving hard.
But ... I do believe that as long as it is within the hatched area things will be fine (as WarSong stated)
I don't know if this is true, but I heard online that ford taurus transmissions require 4 extra ounces when full on the dipstick, who knows though. I think it was more of a tip than anything else though.
I'm not sure how much faith I put in those hatches, mine was low in the hashmark(although not all the way to the bottom and my transmission started slipping badly(dropping out of gear) one day, I refilled to the top of the hashmarks and have had no problems since....