Honestly? It's that I have no idea where to even buy a reasonable FPGA card with a high-speed interconnect so I could build my own Catapult-esque system. Some

Honestly? It's that I have no idea where to even buy a reasonable FPGA card with a high-speed interconnect so I could build my own Catapult-esque system. Something where I could buy a fully working card with standard networking FPGA blocks to build against, and have the FPGA mesh and PCI(e) connectors "just work" with minimal config. I've never moved off "well, that's cute" on demo boards because the market requires a lot of hardware customization to do anything neat (eg, MS designing their own for this). And, well, not to harp too much on the tooling... But the tooling is annoying. Workable, but annoying.