Again, I am not a nutritionist, but we also add unprocessed oat bran to our muesli mix. It is relatively cheap ($2 for 500gm at Coles/Woolworths) There are benefits which have been attributed to regular intake of oat bran such as the ones outlined here. It also has a mild, but pleasant taste.
We also add walnuts and hazelnuts instead of almonds as we have these trees in the backyard. The dried fruit we add is dates as again it possibly is nutritionally better than some other dried fruits. The walnuts, hazelnuts and dates are cut up into around 5mm sized pieces.
Our current mix is something like:
1kg rolled oats
500gm quick oats
250gm high fibre processed bran
1-2 cup oat bran
1 cup coconut
1 cup walnuts
1/2 cup sliced dates
1/4 cup hazelnuts
teaspoon or two of ground cinnamon
We sometimes add white sesame seeds, sunflower seeds, pepitas, peanuts or sultanas from time to time (instead of or in addition to the usual nuts/fruits) to change the mix and make the flavour a little different.
The mix is also good to make a bircher muesli type breakfast where fresh home made yoghurt and a small amount of juice is added to muesli in a bowl, the night before.