I'm in the erik_squires camp on this one. It is easy for an audio hobbyist to get an urge for change even when they are quite pleased with their current system. Face it, we like to tinker. One way to address that instead of trying to improve on the characteristics you like about your current speakers with a trade-up, try getting a second pair that does well in other areas. If only one system, periodically change out the speakers to enjoy what each does well, and then circle back to the other pair after awhile. Then rinse and repeat.
Or, what I've done is set up a quite different second system in another room. Ohm 1000s with a sub in my main system in a good-sized open room, and then a pair of Spendor 4/5 speakers in a smaller room. Both sound great to me, but with completely different perspectives.