If I want to focus a specific weapon, it costs 3 Engrams. That means I can only focus 7 weapons. In the previous system, I would only have 16 Engrams, but I'd be able to focus 16 weapons. The economy of this game has taken a nosedive ever since the decision to axe Legendary shards was made. Way too many things are too expensive for no discernible reason and it will only discourage newer players from even trying to get a god roll weapon. Just make focusing cost 1 Engram and a bit more glimmer.