The thing that always seemed weird to me about games that involve a hefty dose of magic countermeasures is that such games usually become even more focused gameplay wise on the players of spellcasting PCs because the game becomes about measures and countermeasures, basically problem solving your way around magical countermeasures by proper utilization of your own magic.
I think the countermeasuring put in place by DM to avoid spellcaster to steal the spotlight leads to... more preparations and calculations by the group, with the spellcasters at the center stage even more. I actually prefer to leave them be (even if I must say it's depressing to have a BBEG hampered greatly when I imagined an epic fight for the player and it ends with "I planeshift him away" on round 1.