Several things. In no particular order. I've had a look at the Sub 20. Nice bike. 32mm rubber is NOT small for commuting, nor does the size of the rubber have anything to do with the life of wheel bearings. Maybe the Scott can take bigger rubber and maybe it can't. I have my doubts that the other bike pictured with seriously large rubber is a Sub 20, but if it is... those tires are going to cost $40. Each. And I'm not sure that the o.p. is going to do the work of swapping them himself. I could be wrong though. I hope I am. The riding position is what it is. Changing it will involve money, especially if one does not have the skillz to do the labor. I don't think it is worth it. A $20 stem extender is all the money I'd throw at it, if that didn't work I would HTFU and learn to like the 45* back angle. At 34 there should still be enough gorm in the average bloke to want to rise to a challenge like that. BTW I found a 2014 Sub 20 for 665 British Pounds. In 2006 the Sub 20 was $546 USD. It had 26" wheels then, 700C now. That's huge. I'm just not seeing a terrific amount of inflation there. FWIW.

H