Storage
When events end and collection items are no longer needed, it would be nice to have a "delete all" option. I don't like my storage to be cluttered with hundreds of useless shards or arrows, and it's tedious to delete them one by one.

Training
Please add a filter to show only dragons that still need training so there are fewer to scroll through.

In my opinion i love keeping items from events for remembering old memories but the training improvement is really good and helpful