Basically what it says in the title - who are some of the older, lesser known characters who you never heard of, paid attention to or found particularly interesting before the current era gave them a boost in visibility and story focus?
Same question but in terms of brand new characters?
And alternatively, are there any characters you've caught glimpses of but think could be a lot better utilized in this era or in a particular book?
For me, the biggest 'break-out stars' of the era in terms of characters I always liked, and think have really benefited from the boost in focus or visibility: Synch, Kwannon, Destiny and Cypher - all of whom I always thought had mad potential, kinda figured would never get to see that potential really delved into, and thus are being used in ways and to degrees I really never expected before this era.
Characters I wasn't that familiar with, or never thought too much about prior to this era, but who are now on my radar in a much bigger way (and I hope they continue to get an increase in focus/popularity): Manifold, Thunderbird, Tempo, Meggan.
Characters who have gotten a little bit of a visibility bump or who have been around here or there, that I hope continue to get used and built up more: Wiz Kid, Lourdes Chantel, Christian Frost.
Characters who've been referenced or relevant enough in the current era, I think they have a lot of potential TO be bigger than they are, if they get some more focus: Amelia Voght, Trinary, Pete Wisdom, Proteus, Absolom Mercator, the Xorn brothers, Petra and Sway, D-Cel.
Brand new characters who are on my radar in a big way thanks to the current era: Ora Serrata, the Fisher King, Somnus, Solem, Khora of the Burning Heart, Third Eye. (I know there was a character named Third Eye in a post Decimation story, but I'm pretty sure LaValle's Third Eye character is brand new).
Brand new characters who I think have more been talked up than they've actually been developed, but that I hope we continue to learn more about or get more focus on, or assume we will: Bei the Blood Moon, Mother Righteous, Lactuca, Sobunar, Escapade, Carmen Cruz from COTA.
(I would love to see Carmen as an X-Men intern or with some kind of apprenticeship to either Jumbo Carnation or Forge, given her interests in both costuming AND in adapting/integrating technology into those costumes. Given her interest in costuming, and her shapeshifting powers, if she doesn't stick with "Gimmick" as a codename moving forward, I think something like "Masquerade" would fit her well too).
Brand new characters I don't know are necessarily intended as focal points or with stories or development planned at the moment, but that I think could have a lot of potential and would love to see more of: Uqesh the Bridge, Mother Rapture, the White Sword, Brutha Nature from cameos in Ayala's New Mutants. (I know he was technically invented prior to this era in Age of X-Man, but he's still pretty new. I'm grandfathering him in. Its fine.)