I don't have a strong opinion on this.
The part of me that is in favor of it is partly due to the trouble with enforcing coaching from the stands.
If limited coaching was allowed -- perhaps, one (or two) short visit(s) between sets - I don't think that would be bad.
I don't care about that from the TV viewer's perspective, although that may not be a bad thing.
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On the other hand, as Fed apparently pointed out, I don't like that this may additionally favor the more established players who can afford top-flight coaches to travel with them.
I don't care as much as some about the "gladiatorial" aspect of it -- I think that's overrated. There's never an awards ceremony when both winner and runner-up don't mention their teams. One or two conversations during the course of the match would not diminish that for me. They're not calling plays -- as in football, or to a lesser extent, basketball.