Those discount vouchers should drop off regular monsters on the world map or something with no cap (just low drop rates or something) so we can actually invest time to getting what we need. :( It would be cool if some of the events had incentive for hard work rather than blind luck. I'd farm world mobs for awhile to get a discount voucher when I need it. :D

But to your main point - have events improved? I think they have somewhat - I definitely feel there's still room to grow but I don't think Oasis has terrible intentions... they're making an effort to implement what we request.