With the end being so popular now, I think it would be a cool addition to have end portals work in real time for people with Voyager. I know people pay the $40,000 or whatever to get those to work, but I'd say scrap that. The server would be a lot cooler if end portals worked.
-1 I'll be honest, I'm not quite sure what you are suggesting. If it is to be able to make a working end portal anytime, anywhere, then my -1 stands. If I misunderstand this, then I'm willing to listen further.
-1 How would people be able to build an end portal? And why not just go to spawn and enter the portal there? Also, you're not making a lot of sense. This would also require a lot of extra coding, to prevent anyone from entering the End. Having the portal at spawn makes it easy to allow people in who have End Access.
No. Portals would allow free access to the end. You must use the ones at spawn, or ask for a custom one at your town.