Moeen on the way to joining this list unless he improves.A lot of these are selections where players have come in for a handful of Tests, been rubbish, and swiftly dumped.
I challenge anyone to come up with an XI of players who were persisted with for a reasonable length of time despite being really mediocre. Shane Watson and Martin Guptill immediately strike me as being the two best examples of what I'm looking for, although they're quite rare.
Bopara for England a decent fit.
Has a worse batting (just) and bowling average than Watson, and is a worse fielder.