This is a great topic, similarities between VOY and TOS. I'm going to come back to this and post lots of inspiring stuffs but right not I'm watching Buffy and drinking beer. However..
I have always said Janeway is the captain most like Kirk. They are both lateral thinkers, seat of your pants, intuitive and at times they look reckless.
Totally agree, and I'm sure a lot of interesting comparisons can be made for both shows. VOY on the whole reminded me the most of TOS out of any of the spin-offs.