Fligigel
Conjurer
You've said something like this before. Are you fighting using archers, come what may? If you are then you are making things very difficult for yourself and it is no surprise that you have a big problem supplying enough troops for your needs. You should use archers (or other light melee) to fight when they are facing either heavy melee or mage troops. Also, note that your archers will be nearly as effective as rangers, which have a better range of movement.
I find on the spire, you face a random array of heavy stuff and as long as a mage (or two) is present, the archers (needles40%) do a good job. Strangely, they kill the orange heavy range. Also strange is what looks like an orc strategist says it kills light melee. When their light melee shows up in strength, then I flip to frogs, golems, but I haven't perfected what else to use.
I used a lot of time instants last week because I did a 9800 tournament. I concluded that it was a bit too much work.