a lot of people are riding C kites with a tensioned 5th line --- this is almost the same as riding a modern hybrid C kite with a bridle, you get the C kite experience, but the tensioned 5th line acts to depower the kite when you push out the bar, so the kite goes upwind better and also when you drop the bar, the tensioned 5th line acts to prevent the kite from dragging you around as much. It's different experience riding a C kite with a slack or no 5th line. This development isn't new, people were rigging their C kites with tensioned 5th lines back in the early 2000's. naish Torch, Best GP, North Vegas all ride with a tensioned 5th line. The fuel rides 4 lines so it pulls downwind harder than the other C kites.
I think everyone should ride C kites at least once, it's fun and it helps you at least to learn to edge properly so it's a good learning experience. Then after you learn how to ride a C kite you can go back to a bridled kite.
Nothing wrong with a hybrid kite either like an RPM or c4.