Nah, those things I mentioned haven't been a problem so far in Mass Effect. It's been fairly easy so far on Normal difficulty. I just need to get the hang of managing my squad and I'll be good. Oh, that's my one complaint so far: giving orders in battle is a very hit-and-miss proposition. The squad AI isn't great. I wish it were a bit more intuitive, like in the Rainbow Six: Vegas games.
"COLONEL KLINK, WHY HAVE YOU FORSAKEN ME?!"