You can guess empirically what to add. But there are fans of hybrids, fairways, and utility/driving irons. Your swing is unique and so is the distance gaps you need to fill. Players with a higher ball flight would favor the utility. Those losing height - and distance control with rollout will prefer the higher launching hybrid.
Find a fitter for clubs that fill your gaps.

Have this same dilemma Tim. I did a fitting with Nick from Titleist today at Gold Creek, and I would never have thought to try a 4i loft in a hybrid but, the club was amazing. I also tried the u.505 but the flight of the TSR3 hybrid was in a much better “window” for me.