I found the contruction of the mine cars interesting, but they don't run too well on the new tracks in my mind. Still I would have liked some more tracks to be included. I agree, it's annoying that the figs keep getting their heads bumped...
While the temple section is quite high it's definitely not wide/deep enough. In fact, the whole construction is very open overall. But I guess adding more pieces might have made the set too expensive?
The figs are definitely nice, and buying this set is the only way to get (most of) them.
Overall, I still think the large Adventurers sets are much better than the large Indy sets.