Do not make any essential gameplay elements larger than template skin dimensions (especially for combobursts). Larger elements may effect gameplay performance, and thus should be avoided. However, any elements that do not directly effect gameplay (e.g. pause-back, play-skip, etc.) may be slightly larger if a legitimate reason is given.The purpose of this rule is to set a nice marginal resolution of a skinning element to prevent gameplay performances getting bothered by a gigantic skin. Now however since the template skin has changed and got compact, the acceptable range of hitburst skinning for example has been highly restricted. This single rule is making the old EBA, ouendan, and even the old osu! template skin a forbidden one that should never appear in the ranked section. Is this how the original rule was purposed?
There is a skin that best fits the intention of the mapper, and that is why a custom skinning exists. There are a variety of skins, but this rule is blocking mappers to use the other big stream of the skin. Rule should allow mapper to use the skin they want as long as it doesn't terribly damage the gameplay.
This rule existed since 2012 which is before when the new template skin has appeared. This rule is outdated, and the contents fail to achieve the original purpose of the rule.
Considering the narrow leniency range the current template skin is providing, this rule would rather suit better as a GUIDELINE.