IMO the build kit on early Pitches was too light and XC-ish in the first place: Rims the same width as a 717, SPDs, triple rings? Naahh, sorry.
But if it’s your only bike it actually is quite a good spec. I don’t use the SPD’s as a personal preference, and if the BB was higher I’d put my big ring back on with a big bashguard. Still got the original rims on which are still straight despite several trips to Stainburn and the Peaks. They seem pretty strong to me and suit the tyres well.
A nice set of lighter but the same strength wheels and maybe tubeless would be great (don’t like tubeless myself). The finishing kit, while good, could be upgraded bit by bit with some choice lighter but same strength parts and the drivetrain can be lightened a fair bit as it wears out. Plenty of scope for some lightening as funds allow but still keeping it strong at the same time.
I’m not going to change my Pitch, my only bike, for a long time. I love it and it’s my only bike. I’ve no interest in putting freeride weight stuff on it as it’s only going to reduce it’s versatility.