Two general changes would help alot: First give the gf a +1 % crit chanche for every attributepoint over 10 (dex or str). Secondly let the gf attacks during his classmechanic (blocking) hit more targets, like in 180 °.
As a righteous cleric i would prefer the following changes: In general, at least as a class feature, divinity should recover a) when the dc left the battle b) by 1 stack when using a dodge (infight) This should help in PVE as well as in PVP. Then the casting times should be reduced (Bastion of Health, Hallowed Ground,…