I will be playing mostly blizzard titles, guild wars 2, and perhaps BF3 in the future if that helps
Not really. Microstuttering in itself can be bothersome to some people, and others not at all. While it might be bit complicated, considered the 6800 series cards only has 1 CrossFire connection, having a 3-way crossfire set up nearly eliminates micro-stuttering.
...The performance of three- and four-way CrossFire setups not only surprised us, but also managed to utterly convince us that micro-stuttering doesn't have to affect your multi-GPU configuration. For some reason, the third GPU almost always eliminates micro stuttering and has a less-pronounced effect on performance...
If AMD considered putting two CrossFire connectors on its Radeon HD 6870, along with adding some more memory, a trio of them would absolutely be a price/performance leader with minimal micro-stuttering.
More reading here: http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html