If it's done well, sure, definitely. However, for me, VO is more of an extra than something that is either expected or required. I always turn the subtltles on anyway. Generally, I would prefer if VO work was minimized in place of additional non-voiced text rather than limiting the text since everything has to be voiced.
I don't need VO, but I definitely prefer it. I also liked NWN2/MoTB way, lots of VO and quite a bit of text. The only VO I'm not keen on is PC. That IMO should remain silent.
New ME2 Blur trailer here