DoTs can be a lot of fun, but you definitely don't need one on every job. I'm sure that there are plenty of people who don't particularly miss the scintillating gameplay of Fracture. There are also plenty of other maintenance effects in game that play out similarly.

The real question to ask is what does the maintenance effect do for your gameplay? If you take Death's Design for example, it's functionally no different from all the single target 'DoT' effects that we've seen through the ages. But the debuff timer actually ends up being a critically important part of your burst setup. If it's just a mandatory button press every 30 seconds for the sake of 'having a DoT', that's neither interesting nor challenging, and I'd rather the hotbar space be used in more innovative ways.