I don't like how advisor jobs are on a fixed progress bar now. Conquering Ireland from a single province is as simple as sending your bishop (why is this the bishop's job now, anyway?) from county to county and waiting for your free fake claim to finish. Converting Iberia is as simple as sending your bishop province to province and waiting for the conversion bar to fill up in each one.
It feels a lot less gamey for these to be indeterminate things, in CK2 converting Iberia was a massive undertaking (unless you were in a monastic order, but societies are fucking stupid and should be disabled anyway) that you had to progressively work on in the background while you managed your realm. Fabricating claims was appropriately more of a one off, bullshit underhanded move you could pull to nab an extra province, but not nearly reliable enough for major conquest when you could instead be having your chancellor sucking the Pope's dick to get a claim from some asshole nearby.
Otherwise, CK3 isn't too bad. CK2 is still the better game, but there are worthwhile concepts keeping me interesting in playing. Locking primogeniture behind 1200AD pissed me off at first, but it's keeping games more interesting and forcing me to find creative ways to deal with inheritance.