So is Supermans sundip episode relevant anymore? did it happen in current continuity? and if so do all kryptonians have the ability to just go into the sun and become uber supermen/women?
If the answer is yesthen why is Superman not taking regular trips to tank up 'in case of invasion'? not go right in and almost loose his mind but just regularly boost his energy levels.
Another idea, why does superman not have a fortress in space? it would be hard to get to/secure and hed be at top strength visiting it all the time!
I should add that i like the idea of sun dipping, just not for any of the many solar super types apart from superman, maybe his longterm/upbringing on a yellow star low grav(?) planet lets HIM?