Pure rogue has a higher potential disable and search than wizard. Sorry to burst your bubble. There isn't anywhere in the game where it matters however.
Being ineffective makes the game less fun. At high levels even with max spell pen, max spell DCs and max fire damage and crits wizards are still challenged to land spells and do reasonable damage compared to melee.
Many mobs have 31-35 spell resistance. 2 spell pen feats and 3 enhancements and a +3 item get you to 30 spell penetration, 2 levels of rogue means you're at 28 and are landing spells significantly less often.
1500 crit polar rays aren't actually all that great compared to melee dps, but 2 levels of rogue, and now it's 1350 damage instead. Firewalls also do less.
Heightened web costs 7 more SP a cast. Max empowered extended firewalls 3 more per cast etc. so you give up 2 levels of SP pool and 2 int worth of SP and all your spells are more expensive. Fine if you have pots to burn, but you WILL be burning pots a pure wizard wouldn't be.
Duration of all your spells is less, requiring more SP and more buff time.
Even with max int and capstone and enchantment or conjuration focus items, holds and web can be unreliable, losing capstone makes them even less reliable. Landing less often and breaking earlier, very bad combination.
Pre epic wail even in lich form with double necro spec max int and focus is unreliable in shavarath and VoD. Gimping *both* your DC *and* your spell pen by taking rogue makes you pretty much unable to be effective with it.
But hey, you can do all those traps instead of just walking around them or letting the bard with splash, ranger with splash or hey, the rogue do instead. Yeah, thumbs up, totally worth the gimpage.