I guess I must fall into the weird category as well, then. As I mentioned in another thread, I haven't run into this falling off of interest or ennui either.

As structured as arrangers are in the rhythm and accompaniment departments, it doesn't stop your right hand from doing the business. Arrangers are, after all, a compromise and can never replace the live band experience we were in for all those years. But, as the old saying goes, you cut your cloth to suit your needs. For some it's a matter of economics, for others it may be a case of not having other people available to form a group, and for still others it may be, given the general demographic of arranger players, a matter of health issues that prevent a person from going out and playing gigs. In short, it takes all sorts.

Diki has a certain amount of freedom in that he usually has an able guitarist to work along with for his audience, while Bill, in his solo OMB work, plays what his audience requires, the modern day equivalent of a strict tempo dance band. Though it may be just a wee bit looser than that, eh Bill?

Strict tempo dance bands, in their day, played the same arrangements every night, even down to the same notated solos. I never played in one - it would have driven me nuts, but to all practical purposes, apart from instrumental timbres and nuances, there's little difference in the end product between a strict tempo dance band and a present day arranger.

Fortunately, there are markets for everything and fitting comfortably into the market of your choosing probably goes a long way toward your satisfaction/interest level.