The subject says it all. Over a select region or an entire score, I need equal measure widths. I’m guessing the answer is “no”.
For me, this would be a great feature. I do a lot of very easy/medium concert band/string orchestras and my client has asked for this style - usually throughout a score, “whenever possible*”. Another client does “rhythm band” scores for elementary music classes and prefers this also.
*For the occasions when this is not desirable, when a given measure has to be widened a bit to loosen up spacing for smaller note values, it would be nice to be able to select that measure and add an amount (in spaces) to its width.