Having worked in this space for over a decade (but not in the last 7 years), your comments surprise me. Is this a smaller operation perhaps?

In general, operator UX (HMI, human machine interface), is a an area that’s well researched and more or less standardised in recent times (ISA101). Abnormal Situation Management (ASM), Situational Awareness, automatic alarm suppression for “consequential alarms”, High Performance Graphics (basically everything grey except the stuff that matters). If your Engineers do a good job; the operators can do a good job.

Removing all interlocks sounds like a bit of a cop-out to me. Interlocks are there to prevent the mis-click pouring molten steel on peoples heads. If you have a nice boring standardized ASM HMI, operators can’t “hide behind them”. Every operation is the same.