Tom,
I haven't heard it on a score - this week.[:P]
You just know this over use of a motif (maybe Jaws two note motif as well) is 'Director driven'. I know if I was asked to use this on a score - my first thought would be 'how am I going to talk this really dumb idea out of the Director (maybe Producer with the dough).
---Sorry, I digress.......
In all seriousness I think some String FX would be great (beyond the very few in the AP series). String FX I still use is Garritan's GOS. Be nice to have some new ones. Any of the creepy FX from JW or JNH scores, etc. Can't imagine this taking a lot of studio time (no multisamples needed - just tons of variations. Leave the mics on and just let em go crazy[;)].
Rob