Well, personally, just some slight improvements will do me but I know what you mean. There are more than a few posters around the forum 'demanding' all the features of a full fledged Mac Pro in their new MBP for 70% of the current price - oh, and a new design that is only slightly bigger than the MBA to boot. Talk about self delusion.
Perhaps a fair call would be more video memory and larger standard HDD sizes.
VRAM for two reasons. (1) is that more people are going to get into HD video editing now that most home camcorders on sale in Best Buy or wherever are HD models and (2) some people will probably want to run boot camp on their MBP's just to play the hottest PC games, most of which really want 512MB VRAM now. The 8600 video card is still not a bad card and higher VRAM levels would see it through in the range until all the major chipset changes due in the second half of this year.
Larger HDD sizes because (1) again, more people are starting to muck around with home made HD video and (2) a lot of people are starting to build up quite big Podcast and other legit downloaded video libraries. I have over 40 episodes of Diggnation plus weekly episodes of several local TV shows from here in Australia on my iTunes podcast library. You add four hours a week of video (even in standard quicktime config, let alone the new Quicktime HD podcasts) to your iTunes library and pretty soon 160GB doesn't look so big!