I've always enjoyed walking on Great Mell Fell, I've done quick, straight up and straight down routes from near Brownrigg Farm, traversed the fell without even going to the top, traversed part of the fell and headed up to the top from whichever spot took my fancy and I've even included the fell on long walks linking Little Mell Fell and Gowbarrow. The point I'm trying to make is; small fells stuck out on their own like this don't have to match the negative reputation that precedes a visit. I suspect the reason for Great Mell Fell's unfortunate reputation is that most people have what they consider to be little choice but to end up here at some point while they're working their way through a list of fells. It's quite sad when people have already decided they aren't really going to enjoy a fell before they've even set foot out of their car.
I do understand if it's a day of adventure and excitement among the crags and rocks you're after then you're going to be disappointed here. If however, you simply want a short, enjoyable and easy walk with what are excellent views, then I'm sure you'll enjoy it here as much as I do.