It's just that your observations don't match with mine. The "moderate hardware" is a two-year old desktop with bog-standard hd. As I said: It's around two to three seconds (I just re-checked it: The very first start takes around 4 to 5 seconds, subsequent starts around two seconds). I don't have Office 2010 available, but a 2007 edition on Win 7 and identical hardware is definitely not noticably faster. (Working frequently with Zend Studio/Eclipse anything under 10 seconds is negligible.) Even on my backup PC (5 yrs old) I haven't noticed any slow startups of OO.
Since you are running MSOffice 2010 under Wine: why are you complaining about the "lack of good software" - after all you do have a choice.