The drop shots and drop volleys thing is awful. From what I've seen this is the single worst aspect of TS4 as far as in-game is concerned. There are a ton of unrealistic shots but the level of ease that these can be pulled off coupled with their effectiveness ESPECIALLY if someone is playing some lame high reflex setup and hitting constant drop volleys makes them worse. It takes almost all of the fun out of those particular matches and really puts a huge stain on the experience.
Again most games has flaws similar to this, but it's the regularity at which I, time and TIME again see players of Top Spin exploiting these flaws that astonishes me. What's the answer?
Banning Drop shot Artist? No.
Telling members to please use said shots sparingly and in attempts to mirror real life context or said shot spammers shall be publicly beaten and/or have their XBox's thrown from windows of moving trains and/or jets? YES!
EDIT: Oh and the speed thing does suck ass too, but that's not so much cheesy as crappy formulas in the code.