I mean, think about it:
Experience Orbs. With the way the story difficulty is now, are xP orbs useful? We don't get enough to make much of an impact on a character's level, and we rush through levels a lot faster than we used to anyway. Suggestion: Either scrap this reward entirely, or give it enough boost to be useful.
Splinters. This is easily one of the most useful ones, but do we get enough? We've only gotten 10 splinters from the reward since the rewards were introduced, yet we are getting more and more things to buy with them. In other words, we are in reality getting less and less splinters. If we rather got 20 splinters pr log-in reward, it would be faster to get a new hero, but there are still more heroes coming out that anyone can afford with just splinters.
Matrix of Unbinding: What are these used for, anyway? I have 90 of them in my inventory, not counting the ones I've thrown away. Can't remember the last time I used one.
Epic Team-up gear. Maybe I'm just lucky, but I find epic team-up gear all the time in the game. In fact, when I see it, I just shrug and move on. I don't use most team-ups anyway, and the ones I do already have cosmic team-up gear. It's really not that hard to find. A solution here is to reward cosmic team-up gear rather than epic, and even give us unique team-up gear as loot.
The point in all this being there are more and more stuff to buy, yet we're getting the same amount of money as we did three years ago. Even here in the real world, we get increased pay when stuff cost more. Most average prices go up? So does your paycheck to compensate. So why not in the game?