Most Oriental Orthodox Churches (with the exception of the Coptic Orthodox - a relatively recent, and not historical position) accept the Catholic Churches as true Churches with true Sacraments and priesthood.
This is not entirely true, my friend. The Coptic Orthodox Church does not say that the Catholics have valid sacraments or not. I personally was raised in the Coptic Orthodox Church, and we were ALWAYS taught that your sacraments are valid in our catechisms: i.e. the Coptic people are taught its valid, and no doubt that this is a respect that is top-down driven from priests to congregation in our Church.
There maybe some copts who do not think that your sacraments are valid, but as I mentioned, this is not what is being taught.
I think I see what you mean: if you meant that the Coptic Church, until recently, did not view your Church as one with Valid Sacraments, then perhaps that's true. I'm not sure; but officially, it has never said anything against the Catholic Church or her sacraments.
The only thing we regret, as a Church, is the mixing of religion with politics and power, which I think the Catholic Church may think differently.
There are fewer perceived theological differences between Oriental Orthodox and Catholics (particularly Latin Catholics) than between Eastern Orthodox and Catholics (particularly Latin Catholics).
Agreed. The latin rites are very close to us - even though they view us heretical.
This is a shame, but they are quite close to us. They have this impression that because we are not under the Pope of Rome, we are cursed.
From what I've seen/read, Oriental Orthodox are more open to the reality of different traditions and theological Traditions than the Eastern Orthodox.