as a member of the spanish-speaking fandom, we didn't deserve them. at first, latin americans gave spanish vocaloids a very poor reception due to their heavy iberian accent, and even worse with bruno and clara, because many people didn't like their early art. there was even some in-fighting between spanish people and latin american people. bruno, clara, and maika were high-quality voices, but in the end, only maika became the most appreciated, and rightly so, due to her abilities and how big her voicebank is (damn, seven pitches instead of three!)
luan and lucia did not deserve to die during development. well, maybe luan did, because akuo, luan's provider (not to be confused with akuP), is a shitty person. maybe if they had changed him, it would have been better.
on a more positive note, VOCTRO's vocaloids are the best that have been created for the V3 engine, with flexible and easy-to-use voices, as well as a unique tone and excellent recording quality. I hope that one day the spanish language will return for V6, considering that it already exists for SV
