I look forward to seeing all games one day emulated in MAME. Let's face it, it's come a long way since Nicola Salmoria nailed that Pac-Man emulation back in the day.
MAME was intended to be THE complete cataloging of arcade emulation. Over the years they have incorporated code from many contributors, and, love it or hate it, they have tried to do it in as simple a way as possible.
OK, DAPHNE and other system emulators like Zinc etc may have more tweaks and features, but if they can simplify emulation to just be a couple of files without much configuration (as when CHD games were first emulated, requiring just a rom and a chd file) then that's got to be a good thing.
I struggled with DAPHNE's configuration, as I imagine many people did. Plus, wouldn't you love to have them all running from the same emulator? At least you get consistency and only have to set up one emulator.
Fair play to you guys on development. Laserdisc, HD or indeed anything else will be a welcome addition, no matter how long it takes.