Wow, that's a good idea. Thanks much!
As for WHY to have multiple insertion points.. well sometimes you don't have ALL the geometry yet, to place your object properly. It's all inserting based upon a known point... there's always a chance when a situation will arise where you don't necessarily know the point at which you normally insert it, so if you can use an alternate frame of reference, it keeps you from inserting it roughly in the area, then moving it using other points in the block, because you were forced to use the insertion point... now there are choices and, my friends... choices is what makes life grand.
...god my fingers were just DRIPPING with sap...