Thanks for your feedback. As @Azzend pointed out, we deployed a huge patch on Testlive that aims to speed up load times on user-made structures. You can check it out here:
Regarding the corpse issue, we’re aware of it and it’s up in our Trello board for our community to vote on it as a priority issue.
We have also received suggestions from our community to increase the distance and visibility of friendly tags and our team is aware of it.