I wasn't too stressed about the effect of induction on my scar, as I felt it had had a pretty good trial during DD2's birth. Plus, I had CFM, which I know a lot of people don't like, but it did reassure me. I also gave birth to all three children in a very well-known teaching maternity hospital, so felt that all the right people and equipment were on hand should anything go wrong.
Regarding assisted delivery, as I'd already had one vaginal birth, things were a bit more stretched down there than previously, so I thought that assitance was less likely to be required.
When I was planning my VBAC with DD2, the consultant did say to me that, while there was no reason why i shouldn't be able to deliver vaginally, I should think of the second stage of labour more as my first birth rather than second, as DD1 hadn't made it down into the birth canal (brow presentation, got stuck).
I should also say that I was quite distressed by my c-s, and it took me a while to get over it, so I really really didn't want another one, so my decisions were always made with a bias towards VBAC if at all possible. This is not the case for everyone - c-s can be great but it just wasnt for me. My recovery took quite a long time and it was all so much easier for me with DD2 than DD1 that I was quite set against a c-s. Of course it was easier, DD2 was my second baby and I was so much more relaxed with her than with pore ol' DD1