I always take the rez talent on every hero who has it tbh. Its just too good, the cooldown is also not that huge. And the archonbuff... if you get focused and snared in teamfights you die anyway that few more shield wont save you, and the increased dmg is also not that huge, but thats just my experience I played 48 games to lvl 9 and probably stop playing him for now^^, although hes rly fun to play :(

Going to try promote now, not bad idea. And I hadn't really considered static charge as a siege mechanic, going to that one as well try that too. Nice guide.

update: So after trying this out I really like it. Promote actually helped win a few games with promoted siege engines. The only thing that seems like it could go either way was the level 20 talent. In some cases when the team fights seem pretty volatile the talent to immediately rez was great. Though in many cases for me having a stronger Archon form just let me rampage more.