Less skimmate is also a positive for me.
Yep. How many breakdown thread do we see and the top reason is they don't have the time. This hobby, albeit enjoyable, can be extremely time consuming. Between glass cleaning, fragging, cleaning, feeding, equipment maintenance, water making, turf scrubber cleaning, refugium pruning, bulb changing, I could keep going. I value my time and also the ability to leave the system for vacation and find it the way I left it when I return. Without the automation we have today I doubt I would have got back into it. Roller mats, auto water changers, auto feeders that work in conjunction with the system, skimmer neck cleaners, internet controllable solenoids, etcetera all make it possible.
But back to the roller mat and I'll be honest, that was the biggest selling point to restarting a system. It changes how much time you need to put into a system. Less skimmer cup cleanings, fewer sump clean outs, no need for a turf scrubber, no need for a refugium, no more filter bag changes and tank laundry. This one device is a huge time saver. My major tank maintenance happens once a month now. Change filter roll, make water. Filter rolls are nothing more than coolant filter paper which is very cheap if it doesn't have an aquarium manufacture label on it. The device can now be bought for $200 and I'd expect to see the price drop even more with new offerings and competition. Plus the Chinese haven't stole anyone's design yet.
I'll add that while Julian's tank is very nice, he states in the video he has to really stay on top of it, plus it appears most of the inhabitants in his biotype are more dirtier water corals and gorgonians.