For the people saying "if your using melee, your doing it wrong". Level up charge on a Vanguard and try to play without melee. You kill much slower, yet "safer" if you prefer.
Or grab a shotgun and charge right in, shotgun has to reload and you have all this time in between, that's right...MELEE!
Vanguards are all about doing it head on, in the enemies face. We need better melee!
Just a side note, I build my Vanguard with the Mattock and Reave for longer range combat, I try to keep my Shep's versatile. 80% of my Vanguards fighting is zip-lining into a enemies face and doing a weird shoulder shrug in between shotgun rounds.
We do not need any new weapons for melee, we just need to utilize the fact that biotics can tear armour apart, or crush it. Give biotic Shep's some more options at least, as we see Samara laying the smack down with just biotics.
The other aspect is Shepard is this...http://www.youtube.com/watch?v=HofoK_QQxGc...change the million to billion though.
As far as I could tell to rebuild Shep they put in cybernetic enhancements that could potentially make him stronger, plus the fact his armour is powered.
I am not looking for knife fights or kung foo fighting. All I would like is a combo of attacks that melee could do. Maybe timed strikes, if you catch them while still stumbling you add another attack to the chain, with potential finishing moves if armour/sheilds/barriers are down. You are occupied doing melee combat, so it makes you vulnerable to gun fire which would help with balance.
I by no means think we need to make melee more useful than guns, I love the shotty and would not have it any other way. I just like having something to chain in between, or more options for varied combat.