I agree that the use of episkopos/è in the Pastorals doesn't point nearly as clearly as Ignatius to a "monarchical episcopate". However, the fact that the episkopos in the Pastorals is always referred to in the singular suggests that the church is, at least, heading this way. And, perhaps, that it is already the prevailing pattern.
I wouldn't read too much into the plural presbuteroi in Titus 1:5, as this introductive sentence is a generality ascribing to Paul, in the past, the origin (and authority) of the church organisation (or hierarchy), as valid everywhere (kata polin, in every city). As soon as the text gets into the specifics, it shifts to the singular (v. 6ff) -- and there theepiskopos pops in as the evident contemporary reference (v. 7).
I agree that the episkopos' authority extends to material issues (such as the lists of "widows" eligible to material support by the church) but it is certainly not limited to that: the episkopos' oversight is also on teaching (1 Timothy 3:2; Titus 1:9) and on church government (1 Timothy 3:5; Titus 1:7). Actually there is hardly any concrete, human, limitation of this authority. So there may be less of a distance between the real setting of the Pastorals and Ignatius than many assume...