The car looks better proportioned than the W08, but I don't think the wheelbase has changed that much from what we can see so far.
It shouldn't really be a surprise that Mercedes have stuck to their aero concept; they've stated many times over the past few years that they feel it offers them more than a higher rake concept. After all, the car was generally quickest at high-speed aero tracks throughout last year and was hampered by mechanical gremlins at slower tracks. However, they've traditionally brought significant aero updates throughout testing and by European season so this is most probably not what the W09 will look like in a couple months.
It looks like they've spent a lot of time developing both their front and rear suspension setups, and if it's going to give them the mechanical platform that they need for their aero concept to work on a broader range of tracks then we should expect them to have another strong season.
Last edited by SparkyAMG on Thu Feb 22, 2018 2:39 pm, edited 1 time in total.