Here is the bottom line: you have a great system for updating and monitoring rigs. If I had to do it on my own, it would be very tedious and time-consuming. There is obviously value in that for miners of ALL degrees of expertise, particularly when new coins come out or profitability changes significantly. That is why advertising could potentially be a great avenue since EVERY miner should be using your system and that base will certainly grow over time. You seem to be very savvy in knowing how to leverage that in other business ventures like your SSR.
There is also a 'user-friendly' aspect to it that some people will value--but not all. There could be room for improvement, but in the end, you could have user-friendly features unlocked with a BTC donation. It wouldn't affect one's profitability, but for people who are not so expert and need 'user-friendly' features, they can pay for that separately. Think of it as a "pro" version of an android app.
Let's be clear of what you are NOT doing... you are not creating mining software or operating systems. You are using other people's mining software and using ubuntu OS. If you implement a business model that tries to 'trick' people into thinking that you are creating something you aren't, you will turn people (good people) away.
Charging per rig is a bad idea (rigs are not created equally). Charging per gpu is even worse. Charging per account or charging an upfront fee is slightly better, but then you are competing with ethOS, PIMP, and others when you really shouldn't have to compete with them at all--it isn't clever. Charging a percentage (have the OS mine for your account a small amount of time per day) would be the better of these options.
Another idea is to have strongly suggested donation amounts. But I think that if you become the one-stop shop for all miners, the popularity and support would translate to revenue streams through advertising or the promotion of other ventures.
I think you're an idiot, Donations doesn't work well. You should thank Tytanick even if you're able to switch to Simple OS using 1 of the 8GB Flash drive you already have and save $40 on SSD. You have no idea, Eth OS charges $40 for something that only work on 1 COIN! Eliovp charges $30 per OS that only work on Panda. He's giving you access to a tool that not only work so wonderful with SRR but save you money from needing to pay for monitoring licenses like Awesome Miner. Give us something better and then you can talk Sh%t. I didn't even want to bother with Linux until I Simple OS came out. Like many others, I supported Tytanick by ordering his SRR as that will actually more than pay for itselves over time and in 1 indirect way support his hard work in supporting the community. Now you try Windows and you tell me how easy it is to switch to different coins. Crazy..............There's nothing like Simple OS out there! You have no idea how much people are saving on SSD just switching to Simple OS not to mention the better has on LINUX!
You seem to think it's very easy, why don't you create something better and make a Donation button and see how much you get. I'm converting to SIMPLE OS and thanking Tytanick for simply letting us use it for free today. Even if it's a small charge per rig, you have no idea how much you're saving!