FVDs are generally the way to go now if you use elementary for the majority of your tracks like I do. Usually it is a good idea to supplement your FVD track with something like the Cnake_Sinhat formula in areas that have negative Gs but need a nice vertical to horizontal transition. FVDs by nature make these sections into an awkward falling bank like in a reverse banked hill.
Examples:
http://www.rcdb.com/ig1565.htm?picture=19
http://www.rcdb.com/ig2905.htm?picture=41
Hill right after tophat.
SROS's final turn into the bunny hills.
If you toolbuild you'll generally make rides that all feel the same since people have a habit of using only 1 wizard and then linking a bunch of them together...
...The problem with tools is I see lots of tracks with a hill that exits into a turn at the bottom (Like Goliath at SFOG's second hill) and I see the hill is nice and straight until there is a ridiculously huge heartline at the bottom.
Just remember that not everyone one does this and that some people do take the time to stitch various different formulas together to get generally favorable and accurate design. Usually the problem you mention occurs only when some people think tools will be an easy way to get a gold and then they just rip through their design and disregard the fact that all of their transitions are on inflection points.