Zocc is useful.
Morgan is interesting and works well under certain circumstances, but she’s not that special anymore.
Honestly though? I’d be tempted by Mother North dupe - she’s incredibly useful and if I had two maxed, they’d both get used every war… Not to mention two of her in a team could really provide an excellent failsafe, and a very easy A grade defence in rush tournaments.
As many have said, Telluria post nerf is not a good use of mats. Mine very seldom comes off the bench. I’ve seen a few of her recently in defenses, but she doesn’t scare me at all any more.
Bertila is a solid hero. Not on the level of S5 or recent events, but solid. I use her in my green stack pretty constantly.
I’m planning on taking Silvaria at least to 3/70, because my only other normal defense down hero in Green is Buddy, who’s pretty fragile on Titans.
I wish I had drawn Zocc. Certainly has a weakness against clerics and monks, but super useful on attack.
I maxed Elradir and very seldom use him. I’d say I want the mats back, but I have a glut of tonics (at least compared to any other elemental mat).
Zocc looks really great to have. Many of the others do too, of course. Bertila has been giving me a hard time when facing her in some tournaments, because of how sturdy she is, but I have no experience with any of these on offense.
Gargoyle update… just pulled arco. I think he is one of the better gargoyles… it looks like i will be giving my tonics to him. 
Have a Guin and tonic. On the house.