Just use the built-in fonts. Use a good fallback list so each platform gets a good option. Specifying custom fonts is largely a waste of bandwidth for a very marginal improvement in aesthetic. The people who care most are the ones making the decision to use that font. The solution, tritely, is they should stop caring about the little details that much. The bigger details are usually what move the needle. Don't get st…
There seems to be a reply like this at the top of every font-related thread on HN. I often wonder whether it's coming from designer/developers or from end users. Web fonts aren't popular just because they're pretty. They continue to be used everywhere because they offer a consistency that's impossible to get otherwise. With a plethora of mobile devices and desktop environments, you can't get a consistent look-and-fee…
End users don't care if they get Arial, Helvetica, Helvetica Neue or system sans-serif -- except in the case where they set it up themselves, and they're rather upset that you aren't using their preferred versions. But that's OK too, because those end users are almost as rare as designers.
All the inconsistency problems you're noting are of your own devising.
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