There is a general speaking which says that is not worth to emblem three star heroes. However i think the opposite . I think that there are some three who are so usefull in order to aspire to get highest positions in challanges events and Tournaments.
Nowadays im lacking of emblems because they were to most of my epic heroes. Besides that i figured out to put some of them on Melia which i rise recently to get through rare Avalon event .
Its a good idea to see others three star heroes emblemed. And why you choose to do It .
Another one id unlock at least first nodes is mneseo.
Which 3* do you consider worth of being emblemed? I think gunnar, Baltazar, valen, hawkmoon, gato, Melia and mneseo.