I guess I have to disagree with everyone here because I think "the big 101-5" is smart. It gives Kicks a way to freshen itself without really changing anything. To say "new" would imply that Kicks was getting hurt by The Bull and needed to change. Big also connotes importance. A number of stations have imaged with Big, including WSIX in Nashville (The Big 98), CKLW (The Big Eight), WLW (The Big One), WAPE in Jacksonville (The Big Ape). And there are others.
Kicks still positions itself as "today's country hits," and "big" doesn't take away from that. And as one of the posts above said, signal is not an issue between Kicks and The Bull. The difference is negligible.
to add to this: Biggest Hits, biggest stars, biggest concerts, biggest events etc. seems like it fits just fine