It probably isn't worth pushing back the linux version for dual mining capability. The Chinese released ASIC for Lbry, Pascal, Sia, and Decred so there isn't any point in dual mining anymore. If someone develops algos that play well with ethash in the future you'd probably need to start building from scratch anyways. The other tweaks are pretty sweet but once you get that linux version up an running talk to the ethOS guys an get them to incorporate your miner in their OS. I got 2 rigs on ethOS linux with 10 cards an 12 cards cuz windows don't play well with a lot of gpus on a single rig.. given the new mining boards coming out that can house 12+ gpus i think windows mining is going to be getting phased out by people running larger farms which i'm guessing is more your bread an butter target market. I'm running your miner on my desktop with 4 gpus an already wish the linux version was available for my other rigs. Faster hash rate, less fees, no dag switches. I get what you're saying about the dag switches I haven't watched enough to see the dev mining fee  to see if my cards still have to spin up an i'm only running this on my small system anyways so even if i could see it it wouldn't be nearly as obvious as my other systems with 3x-4x as many cards. I skimmed the commands an i don't recall seeing a feature similar to -powlim from claymore. That would be a good feature to have so you can tweak power consumption. I'm not a pro or anything but I noticed that my cards will run at say 30mh/s with powerlimit 20.. but if I lower powerlimit it will drop total power consumption without decreasing hashrate or stability so the cards will just use whatever power they can for the most part. It would be nice to have the feature incorporated in the miner so we don't have to go around reflashing cards to find the sweet spot using powerlimit % / tdp in bios.