Hey StoneViper, do you want to make just a sfear where you can walk on the outside with flags on both poles (which would make it exactly the opposite of CTF-Sfear][)? Or do you want to make a sphere were you can walk on both the outside and inside?!
For example, you could save the old sfear with the red flag in place. Instead of the blue flag on the other pole, you could make a tunnel (or portal) which would lead to the outside of the sphere (the blue base). On the opposite end of the sphere would then be the blue flag (actually right under/above the red flag). You could visualized this by a piece of glass and a warpzone under the flags.
The red team would seem to have an advantage, because you can see and shoot at everyone inside the sphere. However the blue team has a bigger surface on the outside, and maybe some 'snipertowers' (without sniperrifles, because these can't shoot through warpzones).
What do you say?