First: stability ! PM crashes 2-8 times a week, even when unused by user in the background (PM 6.0.2 ,Intel iMac 24" OSX.5.6)
Second: Option to avoid hard line breaks when sending mails. Third: Correct the bug in search function. Here is my old thread (PM 5.0.2 and OSX.3.9, June 15. 2006): It happens quite often, but not regularly that PM does not accomplish searches. (Same problem happened with every version, also 6.0.2) That means _immediately_ after clicking the search button PM displays that there is no result. The time is so short, that I assume that no search has been done at all. I can search what I want, for words which should have a result for sure, always no result. When I quit/relaunch PM the next SAME search is executed and successful. (But then the actual mail window is flushed)