As a seminarian and a person who considers my knowlegde adiquit to answer most questions about our faith, I don't think that putting pews in the church is really that big of a problem. Sure tradition is that we stand through the whole Liturgy or vespers but if we give a person the choice to sit down I don't think thats wrong for if someone wants to stand the whole time he will even if there are pews so really I think that this question is not of the most importance and it's really easy to answer:"Bring in the pews". Because the pews show no problem to our theology hence forth we should not limit ourselves to such questions