When importing dwg files sometimes symbols duplicate and you get e.g. valve, valve-2, valve-3 etc. even though they are actually the same symbol "valve".
It would be nice if instead of having to use the replace symbol for each instance there could be some functionality where you could use the resource browser to select the duplicates and "merge" multiple instances of the same symbol into a single symbol (e.g. "valve" in the example above) and it will automatically replace the duplicates with the "master symbol".
It could even be used to replace an incorrect variant of a symbol with the correct one instead of just identical variants of a symbol.