I think you should keep improving speed rather than support windows for now, because they have claymore miner already with decent speeds
while as myself on linux we stuck with the half of their speed on windows with claymore miner i just got around 45~49 per card for modded rx 470....
I hope to consider this in the roadmap....
Just booted windows disk and tested newer Claymore 4.0
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GPU #0: Ellesmere, 8192 MB available, 36 compute units
GPU #1: Ellesmere, 8192 MB available, 36 compute units
ZEC - Total Speed: 135.354 H/s, Total Shares: 151, Rejected: 1, Time: 00:05
ZEC: GPU0 68.841 H/s, GPU1 66.452 H/s
Pool switches: ZEC - 0
Current ZEC pool share target: 0x0025d4c3 (diff: 1732H)
GPU1 t=49C fan=62%, GPU2 t=60C fan=65%
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This is with intensity set to 2 and my quad amd APU A8-7600 is 50% loaded. Using -i 0 I get almost equal results with silentarmy's miner. Until someone finds different approach for gaining more Sol/s results will not be much different...I would love to help but me myself not coder at all ... I can otherwise help with packing and better newbies support. I also don't think that windows should be considered priority...if you have 1/2 rigs...OK but headless rigs are on the other hand preferred and easily monitored.