That is above and beyond the cage requirements and as long as it does not compromise the cage it is only strengthening for the chassis, and really the cage. Make sure the forward extensions weld to cage continuous front down tubes (T onto), not into two piece tubes.
As far as the tube design you've shown, its over kill and a bit unnecessary. The tube from the roll cage should go to the back side of the strut tower. Then if, for some odd ball reason, you think you need to stiffen the front part of the chassis in front of the strut towers, weld a 45 degree down tube from the top of the strut tower to the front frame member. lighter, stronger and simpler than the bent tube design you have in the photo.
Now you ask why only to the back side of the strut tower?? Well, the suspension of the car and what is between it determines how the car handles. All that metal (body) hanging off the front and rear out past the strut tower is just window dressing and doesn't effect the cars performance (other than to add weight and slow it down). The engine if you look down at the engine mounts is usually mounted to the car pretty much inline with the strut tower, or the front cross member (which is in line with the strut tower). So the torque from the engine is also not effecting the front or rear of the car past the strut towers, just what is between the F&R strut towers. So there really is no reason to re-enforce the front chassis rails out forward, EXCEPT... for making the bumper stronger in the cash of a crash. Which some racing drivers/cars need.
Dudes Ex Machina:
https://www.facebook.com/dudesexmachina?Everyone who has ever built anywhere a 'new heaven' first found the power thereto in his own hell- Frederick Nietzsche