So this is a bit silly, and this is probably public knowledge/i'm late to the party, but it might be useful to put something in the guide about the bonus of breaking 80 ap, whereas you get infinite(or rather the 100x10 100x1 per day limit) gemchas. If it's there sorry i missed it, didn't see it on my re-read so maybe splitting out that section better.

Rough math - 25 AP for the gem quest, average yield is 6300 or so, puts your gems per AP at 252, so you need 39.6 AP per 10k gems
On average, you get half-elixirs at a rate of 1% from the current gemcha, or 1 per every 10k gems spent.

So, if you have more than 80 AP, you get "free" gemcha, by spamming half elixirs on the gem event when it pops up in guerillas each day, using that for gem which then replenishes your half elixirs, and as you get more than 80 AP you start getting a net gain of half elixirs each day, plus all the fodder, +1s, and raid berries.

I know i was kicking myself when i realized it way too many levels late, it really drastically changed my grid buildout speed....