Yeah... I would have thought that in the future account creation will have an automatic take over process if a challenge is completed within a year... or whatever other period.

Example:
Imagine that an account has 10 HIVE staked and has zero activity for more than a year. Then, I would like to own that account, but because it was early created I can't right. Then I would be able to broadcast a challenge request for more than 10 HIVE at least (or whatever is the balance but only staked values of that account, any liquids should not count and would be lost). Anyone would be able to do the same, and after the first challenge is broadcasted, 1 year (or less) has to elapse... after the period, the biggest challenge will take over that account. The lost challenges will lose their challenge (do incentivise fake takeovers), and those HIVE's would be burned. The account that was taken over will also lose the HIVE to @null. If within the 1 year period the being challenged account transacts, then the challenge process is reset and all challenged amounts are also lost to @null. This is a way to defend real accounts and again decentivise attacks to real accounts.

This idea acts as a chance to reduce account creation domination and also adds additional value to the blockchain for wanted names.