Frigates, destroyers and aircraft-style role designations

Should navies replace frigate and destroyer labels with aircraft-style capability letters?

The existing labels already convey roles within each navy's system. Capability letters would become unwieldy, and aircraft designations also vary between countries.

Much confusion is attributed to comparisons between national systems. In the distinction offered, frigates chiefly protect the force and contribute one specialised task-group role; destroyers can screen more offensively, contribute multiple roles and potentially command. These are broad tendencies, with ships retaining overlapping capabilities. Encoding every capability would produce long strings of letters. Royal Navy type numbers show how systematic labels can still confuse outsiders. Typhoon, Tornado and British Phantom examples demonstrate that aircraft designations also depend on national conventions.