Now consider the above scenario with 4 or 5 IFR aircraft beetling along in proximity on clearances at flight levels, happy that they are separated by ATC. Then a gungho citation driver launches and is unhappy to be restricted by the nasty ATCs, he calls IFR pickup or VFR climb and off he goes, straight through the lot of them. Nobody else gets a say.
Better be on your toes.
Note that this will be taking place in airspace that is currently Class C (between 200 and 245).