I think one of the best things about EOS that Dan addresses is the fact that transactions do not cost users anything (they do through inflation which is what pays the block producers but the rate will be small enough that it will not be felt. No all inflation is bad, FYI - it depends on what it is used for, and in the EOS case it is being used for the benefit of everyone) . In the ethereum protocol you need to have ether to pay for every every transaction, so for instance for me to post this comment I need to pay with ether. To me having users have to pay for every little transaction is not viable --- especially when you have a choice between EOS where you don't pay. Dan really has thought of almost everything, but I am sure there are things that we don't know that we don't know. But Dan has built a platform that is flexible enought (hopefully) to over come unforeseen problems and bugs.