Mine’s set with 100mm stem, 100mm SIDs and 660mm bars. I have pondered running mine with wider bars and may well try it one day but I find they hinder climbing too much.
I think a 120mm fork would make it a more trail friendly bike, but I don’t find it much of a slouch in the techy stuff as it is. It’s really a blast.
As for chunkier rims, I don’t see the problem here- I’ve had Olympics on mine that’re 4 years old now and I’ve actually just had them built onto new hubs because they died first.
I’ve used it at trail centres (it’s much quicker round Glentress than anything bigger) and it’s great there. I also find that it’s perfect for the Rivelin Valley trails and I suspect it’d do nicely on some of the tamer trails like the Roman Road but I’d not take it into the depths of the Peak.
Want a spin on mine Rob? Might be a bit small but I suspect it’ll make you want one. It’s the fastest bike I’ve ever ridden.