Thunderbolt hubs are rather amazing now; in the past they'd either get super hot and have reliability issues, or had severe bandwidth limitations (especially if using larger displays).

The current crop has been great for my needs — a couple models have 10G Ethernet built in (CalDigit is the one I'm using now), and most now have more than one Thunderbolt port that allows a high speed storage device to be used as well (in addition to a 5K or 4K display or two!).