Negative, Ghostrider- this change will effectively, do nothing to the bots. 5BCX cards earn 2x the Rewards? Why would I combine? Botlords will continue to run 5 1BCX accounts in Bronze and Silver instead of 1 Bronze level account, which will continue to push the Bronze Accounts up into Gold.
The only thing this proposal will do is, effectively, 'cast in stone' the current state of the meta- Novice accounts soaking up all the Rewards in Bronze and Silver, Bronze accounts soaking up all the Rewards in Gold, with Silver and Gold level accounts stuck in the upper levels of Gold League and trying to eke out an existence from the scraps left over after the Bronze accounts have pulled out their share.