The idea is simply to have a weekly raid tournament that is open to all heroes (☆☆☆☆☆) and all elements.
No special setting needed (very fast, buff, etc.).
Instead the teams are limited to (an estimate) 3,500 power level that is based on the combined heroes power level.
In this format, we could see some truly unique defenses and creative offensive teams. A mix if 3*, 4*, and 5* heroes!
Some may take advantage of family bonuses, or have a high level tank with lower level wings, or we could try to be more even with our hero selection.
This format would also require all player levels to think critically about the synergies of the heroes they are using.