It would be great if we could on add extra's to our current package for a small cost instead of having to completely upgrade to the professional bundle. This is double the price and you gain loads of unwanted extras, especially if its just one small feature you need.
For example:
I could really do with the price list but to upgrade for just a price list is expensive. being able to add it as an add on to my current package for a small fee would be great!