For me its less about there being top dogs, and more about what the top dogs consist of. If each of the three tops are evenly matched with each other and you can build to counter all of them at the same time this is a good thing! Compared to meta’s that are “to diverse” where you have to play the match up game.
Healthiest meta: 1-3 top even match decks, all with good counterplay, and you can reliably build to beat all three with anything.
Next: Tier 0 Meta. One clear top deck, but it is easy to tech against so you can play whatever you want as long as you are prepared.
Ok Meta: An extremely Diverse meta. Lots of options are good, and not having tier zeros is nice. Unfortunately it is impossible to avoid rock paper scissors due to the extreme variance.
Bad: Tier 0 that can not effectively be countered.
The worst: what duelyst currently has, and faeria at least used to: Top decks that rock paper scissors each other, AND one can not reliably build to beat them all.
@terrarius I like the spell mana to. It lets slower lists basicly just plan on skipping the first two turns without penalty, and serves a similar purpose to replace of alleviating bad starting hands. It makes a lot of sense for a card game. Mostly I was saying replace is better if you have to chose. It also emulates globes and or retreating on a board somewhat. I do not dislike it, was emphasizing that I do not think it is superior to Duelyst at all, nor would it be a great option for a board game.
It leads to black box / mantra problems as well. Faeria has this issue to since you save ALL mana. It’s neat, but I do not like it’s ramifications.