I think fixing the SIMD support would be also great. 1) Make it compatible with Intel intrinsics.
2) Update it to work with AVX-512. 3) Add some preliminary support for ARM Neon.4) Optional: Make SIMD to compile for all 32 bit targets, so I don't have to write long-ass assembly code for stuff. Once I even broke LDC with my code (see CPUblit).
