What about the origins?

[VeritableHero]

There are at least couple hundred mallers and only 20 plus tower residents.

I have to disagree. Wasn't the episodes leading up to "The War" indicating that there were only 80-100 mallers? I don't remember ever hearing that it was "at least couple hundred." Last count with the tower was also higher than 20 unless a group died while Michael and Co. were on vacation.

what would be really interesting is if they take over the mallers area, maybe due to internal struggle with the mallers??

Also, I disagree. The tower thinks (based on Saul's recon) that the maller's base of operations was poorly chosen. I don't see the tower staying in the area only to clash with the mallers again. Why not go a distance away and avoid confrontation?