I'd love to see a higher level language binding for FPGAs like CUDA for GPUs. I've seen real experts make data fly through an FPGA but it seemed like development was slow (no surprise given 8hrs just to compile) and getting the clocking/pipelining right to run at really high speeds was non-trivial. In contrast using CUDA for GPUs was pretty approachable even for regular developers to get started although it did take expertise to squeeze all of the performance out of them. Hard to beat FPGAs though when you need low latency though...