All you would have to do is multiply troops by 1.001 each tick or something. But if its too hard to implement, then ofc, dont bother
But on being worthwhile, up their stats at the same time. But not too much. For example what you said could be fine but have that self replication there at the same time. Like i said, it would be more for 'fun' (thats what games are for right?) to make it a little more interesting. The idea is that the self replication not be too worthwhile so it doesnt impact on score ect much
*1.001 per tick = *1.15 per day = *7.08 per fortnight.
We'd only ever see Stunbots win the round in this case. Just buy a few hundred mil Nanobots, let them replicate for a few weeks and you've won!
Ok, you mass nanobots, and when you get zeroed by a robo/striker/SA/dragon/rpg dont blame me
In all seriousness though, i guess this could be a problem if one person in the top alliance does this and that top alliance is extremely good at defending, in which case these players are going to win anyway. So then lower the conversion rate by a factor of 10 or something....
soooo:
*1.0001 per tick = *1.015 per day = *1.22 per fortnight
which is pretty pathetic
so lets work backwards. Let the rate be maybe equal to *2.5 per fortnight. Its a good rate if you manage to fend of potential attackers. Dont forget the bigger you get the more likely you will be attacked.
so say x^2016 = 2.5
(2016 being the number of ticks in a fortnight)
thus x = 2016√2.5 = 1.000455
and that can be your conversion factor