It's not that there's anything wrong with the DS! You replaced the rd (and I sent you a pm about that, did you get it?) - I'm just wondering if, given the responses I've received from bike shops, it's worth it. Seems to me that all the way up to at least 8.5 they are the same frame, so I think new components could be worth it.
I'm so new to this that much of what I think is a good idea turns out not to be such a good idea in real life. So I'm just asking is all!