TYPO3 Core

at the moment there is no possibility to extend the class 't3lib_iconworks', which is very bad for redesigning the backend, because you stuck on the implemented functions which handles the sprites and icons.

there are so many possibilities to handle those icons, and to stay flexible in visualization, there should also be the possibility to implement other ways of icon-handling or extend the functionallity of the current sprite-concept.

or is there a convincing reason why this class cannot be extended?

(issue imported from #M14711)