in my opinion, maybe a little guarantee and protect bountyhunter. because if a project uses IEO services, more investors will guarantee the sustainability of the project. so dev can pay for bountyhunter. importantly, project coins will definitely be listing in the near future. Unlike ICO, listing planning is still unclear.
IEO is just one step closer for the success of bounty hunter to be paid but for me it is just like an ICO it is also depends on the team if they will going to pay you back for the effort that participants made.
They cannot try all the rubbish they do in ICO in IEO because they were well vetted before getting registered, which I believe there is no way exchanges like Binance and Bittrex can register project that is not going to play by the rule.
We still have to be careful in participating in IEO if we dont want this to happen because it is not all IEO that you see that are genuine from the onset, most of these IEO that we will later find in these unknown exchanges will definitely give us same issue as the way they were giving us in ICO, so my advice is that we participate in projects from reputable and reliable exchanges.