You still need potions even if you send them a minute before arma. A decent opponent will slow them down as much as possible to buy more time for their team. An even better one will pair slowness with archers and meteors to shut down any air waves.
So it is basically use as many potions on air mobs. Well i don't think that this is the way the game was suppose to be played, potions are to
support your team and can be used in either side, using potions as the only defense isn't how i believe it should be played.
It is called
Tower Defense/Defence. Not Potion Defense/Defence
Sending blazes too early is costly. Mites is fine but that's already pushing the limit. 12 mites isn't a big deal but 24 or more sent concurrently can be more dangerous than 12 blazes.
Well it is impossible for 1 player to send more than 12 monsters. If you have a friend and are going to send it all at once that is a different story. While it may seem like a smart tactic to send as many mites as possible have you thought of the price?
I personally play tower defense with this in mind "Quality over Quantity" You might play it in another way which is perfectly fine. But to me blazes are the hardest to deal with, much harder than mites. I am looking at it as 12 Blazes/Mites if it is greater than 12 we can't do anything about it, it is a tactic.