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I understand you may want to keep your 130bcd chainset, but I think a 48/34 with a 12-30 will give you a similar low-end with smaller gaps at the cassette.
In any case it's a shame that there's not more choice of cassettes starting with 12t sprockets.
Lolo-
Yeah it’s because of the 130bcd chainset, which is sort of a legacy in my parts bin. Cassette size was chosen based on that. Would technically make more sense to use a smaller BCD and a 34, then not need the huge cassette and long derailleur!
Completely agree about cassettes starting with 12t. Don’t know what it is about the 11, I can see its use for big downhill stuff, but it’s such a horrible grindy solution right at the limit of what the chain wants to do.
Jonny69
Not contemporary sub compact because it’s on a 130bcd crankset, but I run 48/38 rings and 11-34 10-speed cassette on my geared bike. Gives me loads of useable range in the 48 ring because riding on the flat I’m right in the middle of the cassette, then about 20% extra bailout gearing if I drop into the 38. Old, irregularly used knees get knackered easily - it’s worth thinking about.