We had a 1999 turbo Scudo from new (ish-pre registered with delivery miles) for 133,000 miles including big trips to Scandinavia and Europe. Great vehicle until a BMW wrote it off.
Shame you didn’t get the turbo (1.9 TD PSA XUD) as the difference turbo to non-turbo was massive (revised final drive ratio made a huge difference to noise and performance).
If you’re fully comp then a good new stonechip & crack would surely mean a minimal cost new windscreen?
Clutch cable was the only thing that ever let us down on the road. Cheap to replace and I repaired the old one to carry as a spare.
Indicator stalk can stop working (lasts about 60,000 miles if they get used frequently).
Radiator can leak when they get old (same as any car really) – the aluminium fins corrode / turn to dust allowing the tubes to vibrate and leak at the ends (but new rad was off the shelf, cheap and easy to swap).
Driver’s seat cushion is a good age indicator – vinyl sides and fabric centre can part company when old and heavily used.
Can’t think of much else. Possibly 1 steering balljoint (£20). Rear drums and shoes last forever. Suspension parts were pretty sturdy (I know from experience that ARB saddles are a better design than the current model).