Hi Erika, just a comment. The new crusader is really neat and I like the new signature mechanic to get mats directly, skipping the whole chest process.
There might be ways to use it to generate a bit more mats than you had initially anticipated, or maybe it is intended, hard to tell. Either way, I'd encourage you to really think about it before you adjust or"nerf" it, as it would inevitably be called. We've looked at the numbers, and while it definitely speeds up mat generation a lot, it really isn't broken in any sense.
Since Legendaries scale to level 20, the numbers look like if a player was able to 24/7 the game in sprint only with a "max mat generation" formation, they could generate enough mats for a single L20 in about 3 months (6 months if they only play a "more reasonable" 12 hours a day). Given the game has room for 350+ Legendary pieces of gear, and growing, getting one maxed out every 3 to 6 months is not actually a big deal....