Billdoor
QI is a profit-driven business. They have to make money somehow to pay the translators/editors. As for my suggestions, Qidian in China already done all that. (Donation to the authors = Monthly Ticket, buying $3 worth of chapters = 1 Monthly Ticket). My suggestion is based on what Qidian is doing in China.
Right now, I hope that QI can make enough money from
1) Ads
2) Spirit Stones (for those rich readers who don't want to watch ads)
3) Power Stones (for those rich readers who want to donate to the authors and gain Power Stones votes)
They don't have to do what they do in China, which is
First 80-120 chapters are free. Approximately $0.02 per chapter after.