As some others have said, the meta changes over time, and that is not a feature, more like a flaw in the balance. (I'll try to keep this short)
As replaceable said quoting game theory, a player will always choose the best response. Some people here compared the balance in GoIO to other games like Starcraft for instance, but that can't hold, due to the nature of the asymmetrical gameplay of those games.
GoIO is not asymmetrical, as every player has access to all the possible strategies prior the start of the match. The meta tends to change not because of changes in tactics or someone making groundbreaking discoveries. One patch had artemis, another patch had gat flak and now we have gat mortar.
How many times have we seen lobbies (competitive and not) starting an arms race culminating into a 2v2 metafest with 4 pyras? Let's not hide behind a finger.
right now the gatling mortar combo is the combination with the best payoff no matter the opponents' choice (even in meta vs meta):
- i.e. greased gatling: 1038 damage per clip (one clip is enough to scrap away the armor, even taking into account a mallet)
- i.e. greased mortar: 1411 damage per clip to hull (enoguh to kill every ship, it can even overkill a galleon by 11 points, add tactical buff to it and byebye xoxo)
What is needed is a proper balance in the trade off for every ship, it's not related just to the weapons: there have been metamobulas, but the metamidion is still preferred due to the higher mass, ramming capability, armor and mass.
Bringing a meta counter, be it a blender/hwachafish, or a lumbergalleon, or whatever, can be situational and it still doesn't provide the best response due to the unrealiability of the weapons compared to the point and shoot of a metamidion.
A possible
"community solution", until Muse studies its powerpoints and comes up with a better balance, could be introducing a Tier system in the competitive scene [Pokemon community does that (yes, Pokemon has a competitive scene, and it's hella complex)]:
- Uber: metafest tournaments, we are all limited to the gat mortar meta, the first to hit wins.
- Overused: you can bring whatever you want, and we'll stick to the current tradeoff (business as usual).
- Underused: some "judge" sets up a limited pool of ships who are considered more balanced in their group and require something different than the gatling race of the meta. (i.e. goldfish, galleons, mobulas...)
- neverused: limited to the most fragile and tricky ships/loadouts, in order to promote a different gameplay.
Those are my 2 cents.