In warcraft 3 that was very usefull, at least for me because i used the three hero spells on the same button instead of the default hotkeys.

Will be able to change the hotkeys of sc2 ? customkeys.txt

As Dirk said, this was covered in a previous Q&A session. Link here: #BlizzChat Developer Chat on Twitter – 3/12 http://forums.battle.net/thread.html?topicId=23767157319&sid=3000&pageNo=2#21