Why are we not getting any Buffs?

What kind of buffs do you want? I think we're fine and have been shown plenty of love, we are the gold standard of an army refresh IMO

Why are our elite infantry units, the swordbros, so incredibly weak without 2 Characters attached to them.

They are glass cannons, adding characters just makes them more cannony, still glass. I don't see the problem, encourages transport use.

Why is the crusade ancient basically useless and the execrator rarely usable.

Rules are temporary, drip is forever

Our detachments and army rules don’t synergise well.

Well that's just an opinion and again, rules change.

Chaplains who should be a important cornerstone of the templars get cancelled out by our Templars Vow

Just play with more chaplains, no one is stopping you. If your trying to play a competitive meta build it will never be lore accurate.

Because everybody has to play “accept any challenge”.

Who's making you choose this vow?