I actually agree with most of what you said Windhover - but I just don't think a one year contract would make any sense at all.
We won't attract any decent coach if we only offer them a 1 year deal. And what can you really achieve in 1 year anyway.
Well, you can't achieve a premiership so it would be unlikely the coach will be sacked because we don't win one in 2016.
If the coach is any good there should be at least some vaguely objective criteria by which to judge him as coach. If, for example we replace Dick and Tutt and Jones and Whiley at the end of the year with yet more proven players of poor quality AND the coach can't do anything with them then we have only taken one year to find out the coach is no bloody good. Which is a big improvement on taking 3 years to find out the coach is no bloody good.