I did a little bit of work on the Diamonds page in the GoW wiki, but I didn’t consider diamonds you get from guild rewards and event rewards (if any) because I couldn’t find any public indication of those numbers at the time. (Looks like guild tasks give 150 diamonds/week?)
Anyway, ignoring that above number, the numbers I ran are:
- If you spend 50 gems and $5/day, it takes 4.1 weeks to have 4,000 diamonds.
- If you only splurge on Sunday, it’s 13.2 weeks.
- If you don’t spend anything at all, it’s 18.3 weeks.
Adding in 150/week is only interesting in the “spend $35/week” case. It proves it is possible to craft a mythic slightly faster than 1/month. But only just. It will cost you $140 per (mythic | month) to maintain this rate. Or, you could buy two video games with hundreds of hours of content instead.
So really I think it’s not a game where you expect to 100% except “over a very long time interval”. My experience is once you hit late-stage endgame, you tend to expect to get your mythics and legendaries outside of exceptionally bad luck that only happens maybe once every 6-10 months per player. It seems possible to obtain “everything”, but only if we consider 2-3 years “a reasonable timeframe” and it’s getting harder. That’s why the people at the tippy top of the ascension leaderboard tend to be 3 and 4 year veterans.