I´d say this is not needed, when people say "Snow is white" we know that it really means "Snow seems white to me", so saying it as "Snow seems white to me" adds length without adding information.

Ah, but imagine we're all-powerful reformists that can change absolutely anything! In that case, we can add a really simple verb that means "seems-to-me" (let's say "smee" for short) and then ask people to say "Snow smee white".

Of course, this doesn't make sense unless we provide alternatives. For instance, "er" for "I have heard that", as in "Snow er white, though I haven't seen it myself" or "The dress er gold, but smee blue."