Skipping Note Attack

I'm asking here rather that in feature requests because I'm more curious if there's an existing workaround than whether this will ever be added as a feature (since I rather doubt it), but is there a way to somehow "skip" the attack of a note? More specifically, I'm trying to think of a way to get a violin to play a tremolo such that it doesn't sound quite as awful, and my thought is that rather than having each note in the tremolo initiate a new note (and hence sound like the violin is starting up a new note for every note in the tremolo), somehow just change the pitch of the violin on a sustained note up and down with frequency, which would closer match reality.

Obviously tools such as bends exist, but from what I can tell you can't make a bend "instant"- you can hear the frequency change linearly each time. Anyone else figure out a way to do this?