1/ It's not balanced against Weapon Expertise or Implement Expertise. Instead, it's "balanced" against character loot planning. Basically, the times the distinction is important, it's for meta-game reasons -- and that can lead to frustration on the part of the DM or the player, since it's a conflict between DM and player, not a conflict between character and environment.
While this is certainly true to some extent, I don't think that's much more likey to cause such conflicts than the weapon profiency feat (e.g. if a swordmage has spend a slot on weapon proficiency (bastard sword) you can be certain he would be unhappy about getting a longsword in his latest parcel even if focused expertise would work with any heavy blade)
Personally I am glad that these bonuses are still in, I like them the most. I would also never take any item with a daily power. An encounter power is the least I can accept and only if there isn't any even just half-decent permanent property to be had in the same slot. E.g. my belt/boot/head slot are / will be filled with the good trusty +1 to Fort/Ref/Will items and I don't miss any of the fancy "one time a day" item at all.This is exactly the kind of boring bonus feat we were supposed to be rid of with the magic of 4e's fixed math. (This is a meta-complaint.)