Bigger can be done, try this:
defaults write com.macromates.TextMate.preview OakBundleManagerDisambiguateMenuFontSize -int 30
Wow! Well, between that and Stefan's suggestion to hit an arrow key, I'm now suddenly a pretty happy camper. Maybe all that's needed is to promote that preference to some public form. I still think that the principle of least surprise says that the thing should always pop up at the cursor, but I'm much less worried about that now that my _practical_ problem (visibility) is solved! m.
-- matt neuburg, phd = http://www.apeth.net/matt/ pantes anthropoi tou eidenai oregontai phusei Programming iOS 8! http://shop.oreilly.com/product/0636920034261.do iOS 8 Fundamentals! http://shop.oreilly.com/product/0636920034278.do RubyFrontier! http://www.apeth.com/RubyFrontierDocs/default.html