I heard there are changes you need to make in the authoring process for ripguard titles. I track titles too so all I can say is you'll need to set those register values right off the bat before playing the title. You're using Scenarist?
Also...can you give a hint what Ripguard costs per disc unit...just curious. Seems like such as waste of money but if the client wants to pay...so be it!
from what i can tell (in looking at Wall-E and Lost S4, both ripguarded titles), it seems as though there is no advancing of highlights. i think that's really the best you can do with ripguard. unless you want to put in a bunch of dummy chapters and use Part of Title to track that way. Seems like a lot of work for not much result. You're right, best bet is just for the author to be the title tracker!
as far as pricing goes? no idea. too low on the food chain to find out. :)