Atm FreeTON blockchain can’t handle situations when 1/3 of validators goes offline for any reason. It may happen for example in a case of bug in validators nodes or in the event of a sudden shutdown of most validators, despite the low probability of such an event, it may happen and it will be fatal for the network.
To address this issue Ethereum Serenity use a non-BFT fork choice rule named LMD GHOST, as well as a BFT finality gadget Casper FFG.
I propose creating a contest for the development of similar mechanisms for protecting the freeton network.