iLevel, we don't get one from our primary gear piece (hint, it ain't dagger, you have to play it), RME will certainly get an iLevel buff, we won't.
As to afterglow, as said above, how the hell would you proc it? waste of time on an instrument. The other point tho, this game is now solely gear aquizition based, for bard there's no point, none of the new stuff (even that flute) is better than what we had at 99, except for a bit more def. Maybe the AF revamps will change that, no idea yet, but again, our armor isn't our primary tool, our instruments are. They don't need to boost the numbers on Ghorn, or add more songs to daurdaubla, but some wind/string/singing+ would sure as hell be a good idea, and I'm sure other stats could be made to work, traditionally recast down, casting time down have been viable, but I could also see a boost to duration that stacks, or straight boosts to troubadour and nightengale, etc. All would be in keeping with raising instruments up and giving us bards a goal that isn't "get everyone else their stuff, and I hope you have another job to work for yourself, good luck ever getting to play it." As to another song, I'm kind of indifferent unless it's something new to bard, like a regain song, a terror barrier, something USEFUL, but I suppose a 3rd slow song if inspiration is totally failing.