Just making the maximum width much wider is all that is needed to make completion much more useful with plugins like the one I am developing. The current max width is too narrow, so that many completions get truncated to the point of uselessness.
Hope this screenshot below demonstrates the need (see the bottom few completions in the menu).
Forum thread: http://www.sublimetext.com/forum/viewtopic.php?f=4&t=4071
Thanks!

Same here with SublimeClang, very difficult to find what I'm looking for in the list:

Thumbs up for this feature.
It would be a great improvement of useability if there will be more room for displaying information to the user.
Quick question regarding the screenshot in the original post:
How do you achieve to see 20+ entries in the complete menu at once? I always see max 8 entries.
Would also love to increase the length of this window, can get by with the normal width. How is this accomplished?
Does sublime text 3 has wider auto-complete list or ability to set width explicitly?
+1 high importance
+1
(does anybody know whether this has been added in sublime text 3 yet?)