Overall I feel the region ref swap idea is a solid idea with plenty of merit. Some of the pros include whatever familiarity officials may have with player's style, intentions, habits, etc is removed. No assumptions should be applied given an officials knowledge of a player(s). On the other hand, some negatives that I have experienced in watching officials from other regions is the tendency to make calls they never would have made when working their own region. The Tech Foul in the Male-Manual game could be a good example? Other examples are 3 second lane violations ... when a small % of 1 foot is touching the lane. Or when a player is blocking out for a rebound and is called for the foul ... due to "displacement" of the other player.
Are any of these examples a violation of the rules? Sure. Are they EVER called in the region they officiate. No. This is my issue with region ref swapping. The merits of the idea are solid. However, I just feel many refs have a tendency to justify their selection as a top official via calling minute rules infractions they have never made prior. So, making "adjustments" to the style of officiating becomes more challenged.
Bottom line is I am still in favor of this idea. Ultimately, there just isn't a perfect system which removes all issues. Also, no substitute for playing good and sticking the ball in the bucket!!