It would be cool if you can see at the power overview how much the maximum input power of the connected network CAN be. So when i plan to power up stuff, i see if it's possible to add one more thing which consumes power or if the fuse will burn at full load (when everything in this network [circuit])
For example when my miner is blocked, it does not consume power, so statistic says it's okay to add one more, i add it (for example some melters) then the miner stops it's blockade, now if i did not planned good enough, it would may burn my fuse because this miner power consumption was too much now. It would be easier to plan if you can directly see the maximum needed output power for your circuit/grid