Higher color gamut alone would benefit it and HDR would be icing on the cake.
Film doesn’t have a “colour gamut”, it’s basically got intensity of reds, greens, and blues which is represented by each corresponding resistive dye layer (magenta blocks green etc). Film has a bit_ more in the reds and oranges and a little bit more in cyan blue and yellow compared with Rec709, but that’s it:
I’d actually say that is quite a bit more in the red than it seems like on the charts though. That tiny part makes a decent bit of difference to the eye. What seems like a tiny extension for that and also for typical wide gamut photo editing monitors in red/orange is actually really quite noticeable when dealing with flowers, sunsets, fall foliage, red sports cars, 80s type clothes, etc.
I’d also say film has a gamut, it’s just of a different form than the ones usually encountered in digital since it doesn’t have the base slice a perfect triangle and it’s shape and volume are more strange than typical in digital and it’s strict shape isn’t defined by three simple primaries, you need more if you want to minimally encompass it (but you can use three, you will then also end up having to include some parts beyond the film’s gamut so it’s no longer minimal but that doesn’t really matter), etc. Digital wide gamut also tends to add a lot of extensions of ability to saturate really bright parts of scenes while film tends to most of it’s wide gamut extensions more in darker and mid-tones and not so much in really bright parts.