I think they got rid of weapon speed because it distorts the intiative count, unless you reroll initiative every round. If I add +3 (dagger) to my initiative my first turn and you subtract -4 (2hd axe) for yours, I'll typically act before you. The next round I can drop the dagger, quick draw the 10 foot pole and poke you in the eye, before you get your action - lurching at me with bare fists. I'd also be careful with spellcasting speed.
All in all, you could add weapon speed yourself and play the way you want to. I just think it has the potential to be abused by quickdraw artists unless you reroll init. every round.
David