Now that story progression means sims around you age along with you, I'm keen to try and do a legacy again.
With awesomemod, you can even play a prosperity-legacy blend like I'm doing. I just split my one household into three. Story Progression got switched to off (I'd left it on for two generations so that the neighborhood would fill itself). Aging is turned off except once a round, so everyone is aging at the same rate though I don't have to actively play the families I still consider townies until they are absorbed. Then run a RandomStuff script to control the growth of townies.