A carbon fork will shave a pound and smooth out the ride. The
WoundUp comes in two different rakes and has enough clearance for larger tires and fenders.
I like carbon flat-top handlebars.
The generic suspension seatpost that came on our T2000 was junk. The Thudbuster ST works much better. We've since replaced ours with a solid seatpost, at stokers request.
Fancy wheels look cool, but I don't think the average team would feel much difference. I think I've seen the Bontragers going for $700.
That's all I can suggest because I don't know what the rest of your components are.