However I'm curious if they plan to add two-way conversions, so we can exchange LTC to BTC for example.
I don't think so. I suggested them this (LTC -> BTC, which I would use) and that was their answer:
Would you do a LTC -> BTC? I legit would use it as I really deslike the many websites that do this kind of "quick-trades" like Changelly and Shapeshift and I get a bunch of LTC from time to time which I prefer to trade for BTC.
That is a good question.
Problem with this is that we want users to feel confident that the LTC they receive is always new. The only way to accommodate this is by not allowing LTC deposits from users.
Which makes sense, but I would still prefer if that was an option. And their LTC isn't exactly "new" anyways.