I feel like a broken record!
We are currently working on a system to get older weapons. We are actively prioritising it. However, our updates are organised well in advance, and we don’t have control over everything that goes into them.
In regards to the resources gained via the adventure board, over time gems even out to be the same amount as those received before. On stream I had mine reset, but earlier in the day when I was testing I did have tasks that had gems as rewards, and they were more than you would get in the old system.