I think the Manix and PM2 are just right for longer heavier knives mine are FFG. I can use those knives for anything. I wouldn’t want to try some things with them though. A smaller, shorter blade (height and length) would be more useful for some tasks. In a smaller knife the DF2 and Chapparal are much thinner and just right. So for me it’s the size of the knife, the use case, that determines “ideal blade thickness”. Interesting question. I hope you get a lively discussion going on the topic.
Smock, Baby Jess Horn CE, Spydiechef, Schempp Bowie,Ti Fluted Military, Titanium Military, Native S30 V and G10, PM 2 in S35VN, and S110V, Manix 2 LW BD1, Sage 5, Positron black CPM S30V, Chaparral w/Raffir Noble scales, SuperLeaf VG 10, Ladybug H1, Dragonfly 2 in ZDP 189 and Superblue/420J1 and H1, Delica in ZDP 189, Clipitool Standard, the Cook’s knife VG10, Santorum, paring and utility knives, all in MBS 26.