The P & T sleeping bags are a really poor design (don't fit the seat and when you put a child in you can't really zip the sides up properly) They need to be much wider on the bottom half - if that makes sense.
The hood - not sure what it is there for it's not a shade and is pretty useless. Not sure how everyone else is shading their kids without a full on shade a babe.
The straps - too long and always end up behind child when you put them in the buggy which means you pull them up and annoy your child whilst trying to strap them in.
Raincover - huge, cumbersome and when you have a pannier bag on the side it doesn't fit the buggy properly.
Lack of shopping space in basket.
Lack of padding in the seats - compared to other buggies.
When children do drop off - they look very uncomfortable. Can't really recline front seat as other child in the back cramped. Not enough recline in the back seat.
Perhaps the vibe will answer all these issues - for a price.
It is a v. lightweight buggy, easy to push with one hand.