Totally agree with your remarks about the Ledger Nano S regarding the apps. I use it for MEW, Ripple, Stellar and NEO, and all run with different apps/links, for which the Ledger only works as a log-in device. Nevertheless, I like the opportunities this cold-wallet offers in terms of personalization. For the "coins", I do prefer my Trezor, which provides me informations about my accounts with only one Chrome extension.