That would punish newer players and those who don’t have the level of resources or credits to get to level 10 fast.
I would suggest instead to keep permanent eb:bank level and egs:recycle level no matter the level so that new and low resource players have a chance to catch up.
I would also suggest that all levels of eb:bank not require you to visit the ECC HQ to get your interest. Currently only level 5 to 10 eb:bank are allowed to not visit bank to get their interest. This punishes newer and lower resource players who need the help and rewards more then older and higher resource players who are already established and rich.