I want to publish an event but at the sametime I would like members can vote for something I offer there. 

How can I achieve it? 

I want to put my daily food menu there, them members can vote to choose which menu want to eat. 

Would be cool if my members can pay for the menu choosed. 

I would like achieve this goal working all by the calendar system and don't have to create product additional in the Store. 

That's an interesting idea

At the sametime, is possible provide to members facility to recharge money for their credits account? then member use these credits to pay for the menu choosed.

Anyone can do something before IPS accomplish this feature? 

Something like create better calendar templates to show items.... Etc.