The FCC should simply allow for longer, all-alpha callsigns in broadcasting. KLITE, KPOWER, KEARTH, KOAST, KROCK. The initial emphasis on short call signs (three letters) was undoubtedly rooted in non-broadcast licensees and the need for brevity with Morse code (e.g. Q-codes like QSL). The fourth letter, of course, only begrudgingly came along in response to exhausting all permutations of the three letter system. But post-morse code, there's simply no reason for extreme brevity.Believe it or not, the GM specifically requested those calls when he flipped 101.9 from AOR to soft rock in 1989. It was supposed to mean "K-Lite".
In fact, this is already being done with all the long alphanumeric call signs in use for translators. So yeah, why not open things up for equally long, all-alpha call signs...