First a general remark: A strategy based on one unit is always an inelastic, thus bad, choice. You can't take a risk EVER (while AV can just waste 2-3 Agares-Beasts if theres something worth it like killing Chalid), because as soon as chalid is down, AV clearly prevails.
If I run around with 4 Agares-Beasts, Chalid needs at least 5-10 axeman bodyguards. This also considerably slows him, which makes circumventing Chalid worth a try. On the other hand you also need Chalid to defend your Axemen which are otherwise cheap XP to the AV high-brow units. So splitting the AV army gives you a severe pain, due to your weaker backbone units (axemen vs. diseased corpses).
The pillar can be worked around by dividing the army, using a distraction stack of waste units etc. If i can keep my distraction stack behind my frontline, you can flame pillar them every turn, I just put a priest alongside and they will happily soak it.
The crown is not much better than the Flamering (60% vs. 40%). I recon it's passive, which is nice of course, but it's still just one blow per turn, which is most of the time healed by priests such that the cap is not regularly reached.
I must admit, I have never played Chalid, but even my theoretical considerations don't make me want to... Maybe I'll give it a try sometime.