I have another question about the converter, in regard to culture, mainly.
While I'm generally happy with how cultures convert (I like how EU4 exclusive cultures also make it in), there's a couple of oddities I've noticed.
I'm not sure why Pictish converts as Highlander. Aside from living in the same geographical region there's not much that they have in common aside from the fact that they're both Celtic. Highlanders would be more closer related to the Irish, being a Gaelic people, whereas Picts are not considered Gaelic and may be closer related to the Welsh linguistically (although we don't know much about the Picts, really, it's also possible that they might have been non-indo-european like Basques but I don't know how much weight that theory holds these days).
It would please my amateur-Celtic-historian self that it would convert to Pictish (as it does convert straight to Pictish in the dlc converter). But I'm not sure how much work that would take so I make no serious demands for it. I suppose it's ultimately a minor nit-pick in the grand scheme of things.