Vaalingrade
Legend
Did the 3.5 changes have any effect besides doubling down that Small characters should just be rogues and casters?An added effect that some (not all, it sounds like) player characters can have is still less sweeping than the 3.5 weapon changes, IMO, but obviously, we haven't seen the new proposed weapon rules.
I don't feel like adventures are the major focus of backward compatibility, but rather mixed edition parties.I don't think either of those change how adventures will run across the board.
Previously most weren't saddled with the expectation of reading the DM's mind as to what tomorrow's encounters will be.The difference in spell casters in particular is more of an issue on the player end and even then, I think most players' characters use the same spells on a regular basis and don't really take advantage of the wider list of spells available to them most of the time. YMMV.