Rather than focusing solely on the technical side of mapping, maps should be tested for how well they play. Complex maps should be modded regarding how well they play by a player fitting the maps target demographic. For example a complex insane difficulty should be tested by someone deemed "competent" at playing it to ensure that no parts of the maps have unrecognized, obscure areas.
The reason to have a "competent" player test the map is to ensure the mapper knows of any issues play wise. It's hard to deny that some ranked (albeit more difficult) maps have had issues that seem to have been unrecognized or ignored completely. By having a "competent" player test the maps these issues can be noticed and weeded out. Sometimes it seems that maps are ranked despite playing awfully; the entire ranking process is designed around making a quality beatmap, there is no reason that a map that plays badly should be accepted when one that is made technically bad is not. a bad map play wise is as bad as a technically flawed map.
It's also important to note that this rule would apply to complex maps specifically. The definition of a complex map and a competent player are debatable and hence this rule should be enforced when suggested by a BAT before bubbling maps to avoid it causing issues during the qualification stage. To avoid disagreement the rule should be called upon whenever a BAT feels that a map is strange or difficult enough to warrant a "competent mod".
Realistically when spotting maps that require "competent mods" and when choosing competent players, common sense should be used. This rule is to avoid maps getting ranked that haven't been tested by the people ranking them because they cannot play them. Leaving a rule like this down to subjectivity should not be an issue, there is no reason to decline a "competent mod" and if a "competent mod" is needed it should be obvious to at least one of the BATs involved in the ranking process of the map that it should be called for.
In my opinion "competent players" must NOT be the mapper themselves (it is often very difficulty to notice the flaws in your own map that other people may find in which case the entire rule becomes pointless).
Note the mod itself should not be a set in stone "change this or you can't rank your map" kind of thing but it should weigh heavily into the moderation process.
The reason to have a "competent" player test the map is to ensure the mapper knows of any issues play wise. It's hard to deny that some ranked (albeit more difficult) maps have had issues that seem to have been unrecognized or ignored completely. By having a "competent" player test the maps these issues can be noticed and weeded out. Sometimes it seems that maps are ranked despite playing awfully; the entire ranking process is designed around making a quality beatmap, there is no reason that a map that plays badly should be accepted when one that is made technically bad is not. a bad map play wise is as bad as a technically flawed map.
It's also important to note that this rule would apply to complex maps specifically. The definition of a complex map and a competent player are debatable and hence this rule should be enforced when suggested by a BAT before bubbling maps to avoid it causing issues during the qualification stage. To avoid disagreement the rule should be called upon whenever a BAT feels that a map is strange or difficult enough to warrant a "competent mod".
Realistically when spotting maps that require "competent mods" and when choosing competent players, common sense should be used. This rule is to avoid maps getting ranked that haven't been tested by the people ranking them because they cannot play them. Leaving a rule like this down to subjectivity should not be an issue, there is no reason to decline a "competent mod" and if a "competent mod" is needed it should be obvious to at least one of the BATs involved in the ranking process of the map that it should be called for.
In my opinion "competent players" must NOT be the mapper themselves (it is often very difficulty to notice the flaws in your own map that other people may find in which case the entire rule becomes pointless).
Note the mod itself should not be a set in stone "change this or you can't rank your map" kind of thing but it should weigh heavily into the moderation process.