^That^ is a great attitude. Can you imagine of more players saw tennis that way? So positive and fun.
On a sort of related note...I've always been an attacking player with some touch. I used to play these two guys all the time. One played on my college team. The other played between 4 and 6 or 8 for a top ten DI school. I was good friends w/ both, and we had many great practice matches.
Both expressed frustration when I'd dropshot. Not on serve, just in rallies and while approaching. Just too clay-ish a game for them (both were total hardcourt baseline bashers). They saw it as not really 'tennis'. They saw it as 'bush league', even though top pros do it all the time. And these were both DI college players who knew the game very well. One became an academy coach for a while.
My point was that a dropshot is a completely legitimate way to burn a guy who is playing way back, trying to handle his opponent's power and depth. They are adapting to my depth by playing way back, and I'm adapting to their defensive position by hitting very short.
I think they got it, but they'd still make snide comments that I'm playing old man style. Fine with me, especially now that I really am older.
As for the dropshot serve...if it is done underhand, it's slimy, but there's precedent at the highest levels...as a surprise tactic. If it is done overhand, I just do not see how it can work regularly. It is coming from too high, so, unless the returner is standing really far back or is pretty slow, I don't see it working well.
I love goofing off and hitting some of the underhand serves with the wicked sidespin. I've never done it in an actual tournament, but it's definitely fun to make the ball make a 90 degree turn and run off the court, haha.