Volksgrenadier will still use flame grenades on every possible occasions. Playing OKW is just plain boring, just rush MGs straight on, get nade, get free MG to use against opponent.
I wish these incendiary were removed and made doctorinal.
I played the balance preview extensively, and the flame change is not noticeable. There's no point getting any emplacement at all, they'll just get vaporized by incendiary grenades. OKW just uses incendiary grenandes on every occasion anyway, even when storming MGs upfront. It's boring, and most frustrating.
I really wish Relic would remove these incendiary grenades from the cheapest main line infantry, it's just not fun anymore.