Well,you just played against people who didn’t know Kleeses abilities and how to work with/against them. I guarantee you that once you meet a semi-skilled team, sustaining your rift chain will be hard work involving a lot of sweat and frustration and requiring you to put your rifts in places where they’re at least a little secure from Oscar Mikes grenades or Marquis fire.
Sadly I didn’t get the chance to play AGAINST Kleese, but I know what I’ll do if he is: always,ALWAYS destroy his rifts and it’s fairly simple with pretty much any AOE skill,especially if it has DoT.
I was fortunate enough to play a few matches against skilled players(and fortunately WITH skilled team mates) and believe you me,during those 3 matches I found so many alternative places to set up wards that I can’t remember them all plus I had to body block them from Marquis, which isn’t fun when he lands every single shot as long as you’re exposed so it’s either losing rifts and being forced to change position to a less advantageous one or dying.
Again, even if only ranged minions would focus the rifts, it would take away DPS done to your wave of minions as well as your team,so it’d just make things worse. In short:they’d become a passive taunt skill.
Only thing they could do is make trooper minions and thralls throw grenades at them,but that agian would greatly decrease minion DPS against your minions and team.