Personally I have found the towers to be pretty much useless.  They suck, don't do much damage, don't last long, etc.  Now, rook himself is OP in my opinion.  But his tower ability sucks - put the points somewhere else.

I really would like to see developers make games where choices in the game don't suck.  If there is a choice in the game, the choice shouldn't suck - that's a no brainer.  For instance, it seems that these minion idols suck.  I've spent gold buying the damn things, and the minions are slaughtered in no times, and the priests don't heal for shit.  I used to spend all my gold getting upgrades on the citadel.  I'd upgrade the creeps step by step, upgrade the towers, yadda yadda.  Then finally someone told me "Why are you doing that you idiot?  Don't you know all those upgrades suck?  Just go out and kill creeps until you have enough gold to upgrade to catapultasaurus and giant" and I was like "Duhhh... why do they put these options and abilities in the game if they suck?"

But back on topic - yeah rook towers suck.  But they shouldn't be buffed unless they rebalance him, because he's good already.

I'm not entirely convinced that the current timer on towers is intentional. You already have a cap on how many can be up at the same time. If you compare to other skills, like summoning minions or laying mines, they all have a number cap but no time limit. If you look at other skills that do have a limited time, it is clearly written in the descriptions of the skills - and they have no limit to how many effects can be up at the same time.

Perhaps Rook towers are the exception, and meant to have both a cap and timelimit, but that means the skill description is faulty and must be fixed with the full information.

I've only played a couple of games with them but the towers seem unbelievably good to me.  Standing in the middle of your towers with arrow tower upgrades it's very hard for any thing to challenge you.

A)You can have up to 8 towers at a time if you get all the points into it.

B)You can have up to 8 towers UP at a time if you place them every cooldown, or close to it.

C)They should last longer to make B happen more often and make use of A.

The key difference between towers and minions is that minions travel with you, while the towers do not travel with the Rook.  This would add an advantage to the Rook's potential strategies if the despawn timer were removed on the towers.  The Rook would be able to leave towers behind strategically reinforcing an area on one part of the map, while lending its own unique abilities to another area of the map entirely.  While I do play a Rook and only a Rook, I see this as an unfair advantage for the already OP (damage wise) Rook class.

To me, the tower timer makes perfect sense from a balance point of view and seems to have been well thought out.  Perhaps a small despawn-time extension to some of the higher ranks of the ability might address some of the frustrations mentioned above.

From the Lua files:

 LT = function(self)
        WaitSeconds(90)
        if not self.KillData then
            self.KillData = {}
        end
        self:Kill()
    end,

Level 1 Tower of life = 45 second lifespan

Level 2 = 60

Level 3 = 75

Level 4 = 90

It's intentional and not a bug, just the result of an incomplete tooltip.

Regulus' mines never disappear as far as I know...  towers should be the same in my opinion (as a Regulus player).

P.S. psykofunk write shorter and to the point and people might read your posts.

Maybe some of them do.  But I'm pretty sure regen doesn't.  I purchased the 10 hp/sec tower upgrade from the citadel then raised a tower, drained it, and watched it's health stay the exact same.

Towers are too weak in mid to late game when the waves get bigger.  Even at killing one piece of fodder per shot, they are of very limited use versus enemy dgs.

he may be trying to place 8 near all 3 flags and no of course by the time you get to the third flag the first 1 or 2 will go down. But if you place all 8 near each other there is np

I have noticed towers crumbling for no good reason aswell. If there is a time limit on them why isn't it even in the tooltip? Fix the tooltips or remove the timer (preferibly remove the timer because it's silly to invest so many points in the towers which do little damage anyway and cost a lot of mana to drop down)

Towers + absorbtion are the best combo if played right. I never take hammer