not mcuh of a differnece. at level 10 this baraly was around 200 hp (or was it arround 300?) more that the priests healed then the bishops. at lower level of course even less of a difference.
If a player had 5k health he would have been healed for 1500 by rank 3, now he'll be healed for 1100 by a rank 4 minion, or 950 by a rank 3... That's a pretty massive change when you consider the priests heal every 5 seconds, aka faster than sedna heals herself without cooldown reductions and it costs no mana after the initial summon. That's a bigger change than ranking up heal (ignoring the additional effects you get at later ranks).
The way the game was Sedna was healing way more with priests than her own spells and any shift in that is going to have significant effects. I've played WoW, Starcraft, Warcraft 3, etc. and in all those games very minor changes could have major impacts. Let's look at what this change implies.
Monk idols heal a percentage of total health, to increase health you need gold, the new idols cost more gold, when you spend more money on health you have less money to bolster mana regen, and with less healing from monks you need more heals which cost more mana which affects how much health you can stack which affects how much health you gain from priests.
So all this stuff feeds into itself, even a minor change could have a major impact, but it's not even a minor change in the first place.
