I've noticed a lot of lack of love for the smaller races in D&D, in fact, I've been guilty of it myself. But I think a large part of it seems to stem from the identity crisis they all have.
It really surprises me that it seems Wizards never really sat down with their art team and went "Ok, so this is what we're going to make our Gnomes/Halflings/Kobolds/Hamsters look like". A little cohesion would go a long way towards making them more memorable and, at times, less ridiculous. We've all had that moment trying to assure a newcomer that Gnomes do not, in fact, look like a miniature Santa with a pointy hat (well, not in my game, but then, each to their own).
That being said, I do like the new look of the Gnome, and while of late I've been sticking with using a description uncannily like everyone's favourite interviewed Gnome - "I'm a monster!" - the two share approving similarities. Let's just hope the artists at Wizards can stick to a little continuation this time.
Disclaimer: I'm not slagging the artists, nor their artistic license. It's just, if you look at a few other fantasy/sci-fi companies, you can tell what is what through the unity their artists share. I realise D&D does work a bit differently, each person has their own view on what something should look like within their game. that's fine, but it'd help if there was some cohesion, especially in regards to the 'implied setting', since it makes it easier for newcomers to keep up with what's what and lends wach race a greater depth of identity and character.