so i like playing as the byzantines.i even bought a book about them lol on ebay.i got the restore imperial borders before but im wondering with the threat level is it possible to do this again with the newest patch ?
Yes, it is. I have just restored Rome and reclaimed the old imperial borders in ironman (it took me almost 400 years though...). I think it has become a much more politics game where you have to get claims for entire kingdoms (instead of imperial reconquest).
Or, is it better to become Catholic, and have access to eventually all of the Holy Orders?
As soon as you restore rome, claim all the holy places and end the schism you can holy war against all Catholic Rulers.
Much quicker than imperial conquest.
Because in-game Orthodoxy is, quite frankly, useless? Here is an imaginary conversation for you.Why would you, the Emperor of Rome, want to belittle yourself before a churchman. Catholicism means that you are saying you aren't the boss of all the world, the Pope is.
Also, since Catholicism is a heresy, the Holy Orders will flip to Orthodoxy anyway.
For the very simple reason: Imperial Reconquest is a duchy-level claim, you have to wait 5-6 truces/kingdom on average (some has less, some has more...) and it only vassalizes the title holders, meaning it's actually very easy to lose part of it by inheritance. Now in contrast if those useless churchmen would grant that kingdom-level CB....Why are you begging churchmen to grant you the title of a barbarian foederatus? Gaul is part of the Empire, so Reconquer it.