There's a pretty easy route that more or less follows the ridge from Milltir Cerrig, the boggy bits have been replaced with board walk which ought to be a breeze. That means you can then dip down to the lake have a picnic a little climb back up and then it's a fairly level walk back to the car.
Is not the problem with Trail or TGO that after a while they all end up recycling the same old stuff? Other than endless gear reviews what can they do that is fresh? There's a limit to how many times you can talk about your favourite walks in the Lakes, the Peaks or Snowdonia.
A way of making it easier to clean is to smear a thin layer of washing up liquid, or say Vasiline, candel wax on out side of pot/pan. This will 'wipe off' when you clean pot
Being dim, would not wax or vaseline just burn off? I use both as firelighting material.
I can't imagine I am the only person on this forum that actually likes pans looking old and smokey. (Slight downside: after a short time, I look like I've done a full shift in a coal mine, not that this worries me too much as I love the smell of woodsmoke.) On a trip all mine gets is a quick wipe on grass until I get home, when if I am being neat I might stick it in the dishwasher.
It's a case of horses for courses - Arenig Fawr is closer to England and a sight easier walking - it might be boggy in places but nothing like as rocky and heather strewn as the Rhinogydd but lacks the gloriously remote feel that you get in the Rhinogydd. There's also the tiny and not consistently waterproof Arenig bothy to consider. Being further east it gets a bit less clag too.
A good resource with excellent pictures and mapped routes and consistent inspiration is the v-g blog.
Their sale prices often can't be beat. If I was an outdoors retailer their policy would pee me right off. I got a laser comp off them for 180 odd - occasionally they go for more than that second hand on ebay. (twits!)
My experience of them replacing duff kit in the past was piss poor but that was several years ago when sports direct took over field and trek.