Meh. To each their own.
I just found the bard running around hitting people with a sword (using charisma no less) to be weird, as was the bard waggling their wand. Nothing particularly wand-ish about the bard class. The multiclassing was a fun nod to their 1e roots but in practice it just led the bard to feel less like a bard and more like other classes. Very few powers had a musical or song hook, other than some loose flavour text. And instruments were just implements, pretty much wands with "wands" crossed out and "instrument" written in its place. The majority of the powers could have been any leader class' powers. Words of Friendship was ridonkulous; skills were never the best system in the game for hard math but giving a class with high Charisma who was likely trained in Diplomacy a +5 bonus pretty much whenever made their Diplo bonus unbeatable.
To each their own indeed. I had no problem with any of the things you mention. I'm pretty sure swinging swords has always been a part of the bard's repertoire; they're supposed to be jacks-of-all-trades, after all. In AD&D they could pick any WP, in 3.x they could choose some martial weapons, and in 4e they get a smattering of them as well. The fact that they use Charisma to attack, I recognize, is a glaring issue for some, but I have no issue with it. As for the implements, I see no reason why they shouldn't use wands, and instruments as implements makes sense if that's the angle you want to approach the class from - and this is a key point about the class - that you can approach it from the musical angle, but aren't
forced to. The concept is broad enough to cover many different ideas, from roguish conman to swashbuckling warrior, to gish, and beyond, and this has always been true of the class.
I agree that instrument support could have been better overall, but this was not a huge concern of mine.
Words of Friendship makes sure they win one Diplomacy check per encounter. They're bards. I see no issue here. Working as intended.
Personally, I always found 4e's alternate attack stats broke my verisimilitude. "Hey, I'm a bard. Strength and Dexterity are my dump stats so I can barely lift my rapier and am as clumsy as a legless dwarf, but I can stab you in the face using my charm." Yeah, a bard should have a high Charisma and might want to be in melee, but there had to be a better way to get the math to work than just saying "okay, you stab people with your personality."
Again, I take no issue with using non-strength or -dex stats to attack; melee with charisma can represent a deceptive or merely supremely confident combatant. I get that some people have trouble with this, but I am not one of them; it makes sense to me. It can sound silly if you deliberately try to make it so. If it doesn't work for you, that's fine, but without this feature, I am decidedly less interested in Next.
Also, while you don't need to max it for every build, Dex is not a dump stat for bards in any edition that I am aware of. Strength can be, but not necessarily, and this has always been true, depending on how you build or roll.
But 4e was never the edition for people who wanted any semblance of verisimilitude in their game.
Aside from fallacious content, this statement is borderline edition-war material here. Besides, who says that sim should even be any kind of holy grail. It's a game - it will contain abstractions.