Perhaps this is a controversial thing to say, but I find the much maligned Mungrisdale Common to be a fantastic place.
Many people would describe themselves as peak baggers, with the summit itself being their main aim, in which case I can understand why Mungrisedale Common would rank pretty low on their list of favourites. But I was never bothered about planning or striving to get to the summit of a particular fell for that first ascent. A bit naive I know, but for years I honestly didn't realise that was what people did, and I certainly didn't know that there were "lists" out there that people challenged themselves to complete.
When we first ventured onto the fells we had no grand plan and no challenge; the first ascents just came and went, not without satisfaction I should add, but certainly without ceremony or celebration. My biggest sense of achievement came from walking new routes and linking familiar routes together to gain a greater knowledge of the place. In my early days of fell walking, routes were planned which would get me into new areas, and if the route happened to include a new fell top then that was just a nice bonus. As I've said before - there's more to the fells than their highest point.
If I was asked to make a list of fells I enjoy for the "mountain" experience then this one, as with most other people, would be in the bottom half dozen. More importantly to me personally, if I were asked to list the places I simply enjoy being at the most, then Mungrisedale Common would be in the top half dozen.