My first reaction was that half step gearing is useful for 5 or 6 speed freewheels, where the gaps between shifts are quite large. Shifting the chainring gets you the gear in between.

But it works quite nice with 8 speed.
Here's your 34, 46 and 49 with a wide range 12-30 cassette.

For example, at 90 rpm, it's 16.4, 17.5, 18.2, 19.4, 20.5 mph.
You probably wouldn't shift the front to do the half step very often, but getting that "just right" cadence with a front shift would be nice at times.
I like 1 mph difference shifts when I'm working hard. For more typical riding, the 2 mph shifts on either the 46 or 49 would be good.



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If you get new chainrings, lower gearing would be nice.

I really like my gravel / all-day-ride gearing.
It's 30-39-52 and 11-speed 12-25 or 12-29.
I rarely use the 52 unless it's at least slightly downhill, but it's nice to have it for those times. The 39 is good from around 10 mph all the way to 20-22 mph.
The approximately 1:1 low gear is great on paved roads up to 12%, and usable on even steeper grades, 18-20%.
I would like an even lower ring for long, steep climbs, a 28 or 26, but my crankset won't fit anything smaller than 30.