Brightmail needs to move ALL data to MySQL

My understanding is that even 8.0.2 of Brightmail doesn't fully store all data in the MySQL db which is why reporting is so dismally slow.  In 4.1.x I could pull a report of every single sent message in a day, even if it was a couple thousand, in a few seconds, while 8.0.2 can take minutes on much more powerful hardware.  If properly used, reporting out of MySQL should be MUCH faster than sorting through the non-indexed text files of 4.1, but in reality 5.x, 7.x, and 8.x (there was no 6 for some reason) are all many times slower than 4.1 even on multi CPU, multi-GB systems (we have a 4.1 box that we still use for outbound mail on a 500Mhz Celeron with 512MB RAM and it's 10x faster for reprorting than 8 is.