Signal data needs its own currency

Bottlenecks feel horrible. So I want to say first off that I get it, and I'm sorry you're feeling this. 

But after that, I should mention that it's a resource management game. We can't really have a game if everyone has all the resources that they need to keep boosting relic levels. Everyone will quickly achieve the same roster -- all the good toons at r10. 

This is the current balance, and in the current state of the game, like every state before this one, there is a bottleneck. Right now it happens to be signal data. In the future it will shift again and be something else. You're going to have to find peace with that if you want to enjoy the game over the long term. 

In the meantime, like you I'm taking only the briefest of breaks from SD farming for shard farming. Every day I spend 300 crystals refreshing cantina energy. I keep pushing forward the best that I can and reassure myself that everyone else is getting SD at the same, slow rate I am.