Suggestion
Hi few days ago I suggested you that you should make a panel and you said you are working on unified version of em.
but you said working on onion version might be tricky.
so I tried to do it on my own and it is difficult
I came across tor2web which could work
but if they block our url we are done.
and there should also be an option for multiple panel urls as a backup
so I came across tallow aka torwall windows 
software which works like a vpn but it directs all your terrafic from network.
it's open source so if you could just implement it in miner when the miner stars it should also start and connect to tor network and the miner should be able to connect to panel hosted on onion

I'm no expert just giving suggestion