Oerba Yun Fang wrote...
The Asari goddess Samara.
The smart sexy Japanese spy girl Kasumi.
The stunningly brilliant Australian Miranda.
The strong youth of primal rage Grunt.
The Old man of steel Zaeed.
(Nobody cares for you Jacob)
They removed these epic characters for the crazy nut case Ash and some Mexican guy. What kind of a trade off is that? I mean why in the world would I hit on chubby face Liara when I had a super hot milf like Samara on my team. God this new cast sucks. I feel sorry for Shep 
I always thought ME2 introduced far too many new characters, too many to make me care for any of them...a major problem of the overall story of ME2, in my opinion. The whole story got fractured and lost impact with all the focus on different characters. More is not always better...therefore:
Never cared for Samara, and also she was kinda ugly to look at
Kasumi who?
Miranda was annoying to me, her whole "I am so intelligent and super-duper" yadda yadda...Yet Warp was good to have in fights, I'll give her this...
Grunt? I prefer Wrex, he is way cooler and has biotic implants!
Zaeed who?
Yeah...Jacob really was only a filler...
And else? The space-frog, well, hardly ever talked to him...Legion comes in catalyst-style the final minutes of the game...Jack is an ugly sociopathic maniac who makes me feel sympathy for Cerberus and Miranda...only Mordin was really interesting and I liked him a lot.
Really, my favorites will also be Tali, Garrus, Kaidan, Wrex, Liara...and yes, I leave Ashley out on purpose...