I too am interested in the OP2 with all the interesting rumours of going more premium and fingerprint scanner and all that. Time will tell. I don't think this April 20th event is it though.
Also Google will probably push payment hard at I/O this year which will make me surprised if the next nexus doesn't have a scanner. But this IS google.
Buying a premium priced phone from a company like Oneplus makes the gamble even more difficult to make.
Buying a super expensive phone from a company infamous for its horrible customer service is a bad idea.