Zeta crunch, does it get easier?

As others in this thread have said, it's just a time thing. Unless you are a big spender, you will always accumulate zetas faster than you gear up characters (and faster than CG releases new toons) so eventually you will catch up and there will be no things left to zeta. Depending on how far you are in the game that might be very far away from you, but you will get there eventually. I'm a F2P launch player so I usually farm characters slower than spenders, which naturally gives zetas enough time to accumulate. Plus being in the game since before zeta release made sure I was farming zetas from day 1 they were available. That resulted in me having 600 zeta mats today, with nothing important left to zeta. My G13 characters all have all their zetas, with very few exceptions (like GMY lead, Captain Han etc.), and the only zetas I'm missing are low gear characters that I pretty much never use, and obviously toons/teams that I haven't built up yet. But by the time these missing teams are built, I will have accumulated even more zetas, so I will effectively never run out of them, unless something super drastic happens within the game's economy. You will likely get there too at some point. So for now just work on one toon and one team at a time, and you will notice that the zeta crunch isn't as bad as it seems.