I know I've suggested that very same thing, right down to the rewards...even with the drop in mark and hp, the rewards do seem a bit low because of the mix of rewards...I can get unupped cards from bronze and do tend to get quite a few and without nearly as tough a fight as AI4.
I've suggested a change in rewards for even shards or other rare items over basic items to make people want to play ai4 instead of grinding ai3 and then farming FGs.
I tested the 1.3 beta. Most stuff runs quite well. One thing I think many will still concern is the steep step bettween Elder (AI Level 3) and Half Blood (AI Level 4). The Half Bloods are still much nearer to the FG than to the elder. What's about lowering the mark to 2x and the HP to 150? That would look quite well for Half Bloods. And the rewards for winning against a HB are too low also. It is much easier to farm elder than playing vs HB.
I created a thread exactly to propose changes to half-bloods, so there would be more reasons to farm them
in the end there were 2 most voted options:
-lower their hp to half and lower their mark to 2x so they are considerably easier to win and make them a good alternative after farming AI3 for a while
-The other option would change the way you can farm Half Bloods. They would remain the same as they are now, with their hp and 3x mark, but now you would have win streaks. For each consecutive win, you would be rewarded more electrum, but at the same time, the half bloods would have more upgraded cards in their decks, making them progressively harder to beat but at the same time easier to get an upgraded card from. If you would be able to reach a certain streak, Half bloods would run entirely from upgraded cards, making them virtually as strong as False Gods, just with random decks, and you would gain a good amount of electrum per win. when you lose, the streak ends and Half bloods return to normal state until you start making a new streak.