Obviously we all would like to see more wishes fullfilled. That’s just human nature. 
This doesn’t mean that the current system is flawed though. Limiting votes is a good idea, because it drives focus towards the wishes that the majority of users want to see.
The features that i’d like to see don’t seem to attract much votes either. That’s just how democracy works 
. The only thing i could see “improving” this, is maybe increasing the amount of votes you are allowed to give… by let’s say 5… so you’d have 15 votes?
But then again you are just diluting the strength of the existing votes.
The current limitiation forces you to decide what is most important to you (also you can always reassign your votes if that changes). It’s transparent and democratic.
Correct - an approved wish means the team considers it technically viable / feasible.
I would like to point out the following section from the How this Wishlist works Page:
With that said - Polyend is currently debating how to handle future updates and how to handle wishes going forward. More on this in the very near future. 