Thank goodness the mechanics have evolved since 1e!
These three items seem a fair description of 1e mechanical principles. ... Heh, tho I hate each of these three principles.
Well, that's for another post! But I think that, for the most part, these aren't particularly compelling principles for most people (which is why you don't seem used any more, except in games that emulate the older, TSR-era games). They also are very surface-level; they don't do much to help or explain deeper-level play process.