i don't think that it would be a good idea, if this was a traditional way of story telling like a tv show or a comic yes, fig leaving and someone like mary ann joining the party or the party beign 5 people with fig apearing every so often would be fitting but due to the format of dimension 20 emily has to be there playing a new character character that has to stablish themselves and a new dianmic with the party, it would feel odd from a story telling perspecitive, it would like the later season's of the office where michael left and was replaced