No political system is immune from gaming. You're trying to fix a problem every government has on some level by disenfranchising smaller groups in general. That problem would and does still exist in the house alone. I mean, the house is gridlocked right now, and it has nothing to do with the senate.
It makes it too easy to game the system and create gridlock because you only need influence over a bunch of very small percent of the population.
No political system is immune from gaming. You're trying to fix a problem every government has on some level by disenfranchising smaller groups in general. That problem would and does still exist in the house alone. I mean, the house is gridlocked right now, and it has nothing to do with the senate.