if a players game is built on power and his serve and he has very little speed i.e 43 whats the point in having a good serve if you cant use it? big serve and big power means the old 1-2 of big serve big forehand is your game e.g querrey isner berdych etc etc. To call it cheesy the key thing in all this is some people think that there should be no advantage to being a server and im not sorry but i dont agree with it. Also a variety of serves is what makes a good server so to take the slice serve away leaves you very one dimensional in regard to your serve.
Also just to add to those people who think drop shots are cheesy, yes they can be annoying and i dont use them myself particularly but ive played against people who do alot and you will lose some points as a result of it but when you know whats coming you end up winning the majority of those points. As the old saying goes fool me once shame on you, fool me twice shame on me.