I really like chain link fences, so here are a few ideas to improve them.

1. Adding a horizontal version of chain link fences, also a chain link fence gate which connects to chain link fences.
2. Instead of placing chain link fences as a block, how about only connecting them to a chain link fence post? There should also be a maximum number of chain link fences that can be connected to a certain post, so every 3 blocks or so, one must place a new fence post to continue placing more chain link fence blocks.
   Essentially, Chain Link Fences should act like scaffoldings in this regard. There should be a certain number of fence blocks one can place away from the fence post, after that I should lay another post to continue extending the fence.