All that dislike for bigger rigs because its hard to maintain, driver issues, and all that is just whining. Nothing is free and if you want to succeed you really need to put in the effort and spend time tweaking, configuring, and monitoring your rigs.
1. Windows will limit Your possibilities to 8 cards per driver (so 8 GPU max)
2. Cost of buying parts - this contention can't stand for itself because OP stated that he want to COMBINE more rigs into one -> he already have more than 1
3. Increased ele. cost - Really? If you are going multiraid configuration, using Ryzen and many meters of fancy leds - yea it could affect it. But those ~50W more for increased stability and possibilities it brings are nothing to count.
Of course, making 3x 2card rigs is POINTLESS. That's loss you are talking about. But having 2x4 card or 1x8 card ... Well I'll be after 2x4 just because if something fails (and it certainly one day would) I wont be 2X profit in back, only 1 X
once again to all inclusive.
I have spaces in a few offices with restrictions. as follows 1000 watts or less and fairly quiet. these offices provide me free power for ½ the coins. the rigs are fully paid for before I install them.
so this one setup cost me 6 bucks a month for smos fees.
so 360 - 420 a month - 6 = 354-414 ½ to the other guy that is 177 to 207 a month for me
here look at this