Masternodes get 20% bonus for 12 months (or an agreed time period). For example, run a masternode for 1 year, get 20% additional rewards tipped on your MASH node birthday. Could use some of the multisig foundation wallet to fund this.
When purchasing subscriptions make different plans like 3 month/ 6month/ 12month and give them discounts?
@Alpipor3: yup, this is much better and flexible. Easy upselling feature.