Inconsistency

Just finished reading a 50,000 word thesis. The main problem I found was inconsistency, which - to my mind - seems untidy. However, there may be some 'method in the madness' as it can also keep the reader on his/her toes. So, as always, I keep an open mind to others' preferences. If I'm asked to do certain things with a dissertation, then I will of course do that; but if it's just something I've noticed and feel ought to be changed then I feel compelled to check with the client before altering anything.