Change Immolate range to edge to edge
The problem with the current Sunfire/Cinderhulk is that their range does not actually increase with model size. Cho'Gath for example can basic attack targets without being in range to apply sunfire. You have to pretty much stand on top of your enemy to use it with big model champs, which feels pretty off. Many of the sunfire/cinderhulk users are such champs.
If this change adds too much power to certain champs(looking at you Cho'Gath), they could just be balanced accordingly.