Many thanks to everyone for your informative replies re: BIAB 2005. I've since purchased & installed this BIAB upgrade and ALREADY think it 'well worth' the $49 upgrade price just to gain those new features I mentioned above alone.
AJ Bluesplayer: thanks for jogging my memory about "StyleMaker" to convert BIAB styles into Yamaha .sty styles. I look forward to trying this out now to discover for myself how good the style conversions sound, as well as 'how much' tweaking will be required to get them to sound PRO quality.
Scott