The ACC adaptive cruise got stop & go function, can be used in city drive too and AEB auto emergency braking also useful for city drive with many traffics, in case driver lacks concentration.

If you don't need all those driving assistance , then go straight for Executive if you also could do without leather seats & reverse camera.

The problem is the pricing between premium & flagship is much worth the upgrade for all those ADAS / 360 / Displays , whereas the pricing gap grows a lil bigger between Exec & Premium if you could forgo the leather seats & reverse camera altogether.

There are rumor that Proton will release a 'Standard' S70 as entry-level model to be priced below the current Executive variant.