By all means give me a breakdown for the avoidable charges, but I'd much rather see a single figure that I know is the total cost for the basic service.
I agree with this.
Due to my current circumstances I have the luxury of being able to travel when it is cheapest.
FR's web site is very poor at presenting all the available flights with their total (mandatory) charge shown. For a start you can only see one week at a time (many sites give two full calendar months) and secondly only the base price, without online check-in, EU261 levy and Taxes/fees, is shown before you drill down.
The UK version of the site is even worse as it doesn't show any prices at all or give an indication of which are flying days.
For best usability, the price shown should be the full price (including only mandatory charges) with the breakdown being shown when you drill down. The site should also provide at least a full calendar month grid not just a single week.