And what kind of tank philosophy you are following out of which reasons. Reducing the profile of a tank is for shure a desireable feature, but at what costs? And having a T-series like gun depression might be no problem in wide, open and especially flat areas but if you are a country in central europe, then you really want that -9 or -10° depression. A "large" turret with enough gundepression is still smaller than the tank which must show it`s hull to get it`s tube on the target.
And untill a clever solution is found, a tank design must make compromises in these points...unless HK would build Tanks - because no compromise! If such a buldge like on the french turret is a good solution might be another topic, but simply calculating the reduction of the surfaces without counting the drawbacks is a little bit iffy in my eyes.