Once diff drops to 1.1k/800 in a couple blocks AUR will be mighty profitable again.
I think^?
The lower difficulty/higher profitability will cause multipools to jump in, adding a huge hashrate to the network, so it may actually end up being HARDER to find a block at lower difficulty.
Network has already found 5 blocks in 17 mins (rather than 50 mins), which means the next difficulty adjustment is going to be upwards, and steep.