Zeta Event that may not happen:

In all these zetas discussions I’ve still not heard a realistic expectation on what an early to mid game player should be getting in terms of zetas. Nor an expectation of just how high they should be expected to climb in fleet arena,

I think an early game player should be getting very few zetas from Fleet Arena. It's hard to get certain important units without spending in Fleet Store on those. One of the indicators of reaching midgame ought to be moving to full time Zeta spending.

But for early game Fleet Arena rank, I would say that #199 is probably the minimum expectation, which gives a player 1200 Fleet Tokens per day. I'd expect that such a player will reach midgame anywhere from 1 month to 6 months after reaching level 85. (Part of the uncertainty is me not knowing exactly what constitutes "mid game" but part is also not knowing exactly how long it takes these days and then finally there's the uncertainty of how serious a player is and how good they are at managing their early resources.) Though different people might define things differently, reaching rank #50 at payout for your 3rd or 4th time combined with finishing up non-zeta purchases in the Fleet Store (and finishing ALL purchases in the GW Store so you can move to ShardShop currency focus there) are pretty good indicators that you're just reaching or have reached mid-game.

So, early midgame you should be averaging 1280 Fleet Tokens/day. That's 233 mats/year or 19/month just from your purchases. At the very end of the midgame you should probably be taking top 5 in fleet. That's 273 mats/year. There's not a huge variation in between. Call the midgame expectation about 13 full zetas per year from the fleet store.