Since Froch retired, the only fighter I really buy a ticket to watch is local current English Light-Heavy Champion Joel McIntyre. Other than that it comes down to the fight/card now as opposed to the individual.
I'm not sure if it is that the greater success of UK fighters has meant that interest is spread around more or that the current Sky model makes it difficult to really get behind a particular fighter or what for me personally.
Since Froch I've been to a few fights....mainly Frampton and Crolla. Finding fighters with that same philosophy of wanting to fight the top guys consistently has become very difficult...especially when the household names can make a fortune knocking out just about anyone.