I don’t know if it’s just me and my associations but [name_f]Felicity[/name_f] feels very [name_m]Gen[/name_m] X to me! I’m not very excited by it. I know one who goes by [name_f]Fliss[/name_f] (late 40s) and one who goes by [name_f]Flick[/name_f] (late 30s). And of course there was the very [name_m]Gen[/name_m] X TV show in the 1990s of the same name.
On the other hand I am so excited by [name_f]Theodora[/name_f]! Yes she might be “dusty antique” but to me she is fresh af and the nicknames [name_f]Thea[/name_f] and [name_m]Teddy[/name_m] make her very current. I would use her in a heartbeat if she didn’t rhyme with my daughter’s name!
And I think you’re right she fits right in with [name_f]Penelope[/name_f] [name_f]Matilda[/name_f]. They all give me the same warm, funky, familiar, vintage-yet-fresh vibes.