(2019-08-17, 22:03)Travis Cobbs Wrote: I'm going to go on record stating that I totally disagree with all of these claims that knowing that a model is "multi-part" has any value at all to the average user. A model is a model is a model. Whether or not the author of that model chose to split it up into sub-models has absolutely no bearing on what it is. And any MPD can of course be flattened, which results in a model that is indistinguishable to the end user, but very different internally. Confusing users by having two separate file extensions for "ldraw models" is, in my opinion, a bad thing.
I'd like to revive this discussion. Everything Travis write above I agree with. I'll go one step further in saying unless someone can come up with a really good reason why we shouldn't retire mpd, then we should. There will be less confusion going forward (LDCad and Bricksmith all ready save mpd files as ldr by default) and existing mpd files will still work.