Glasvegan wrote:You can see that I have started the process of upgrading to HQ6 so interested in how to develop a more solid core defense...
Glasvegan - Welcome to the Forum!
Good Base design, but it appears that it hard to defend when it comes to Heroic Defense "events"
Keeping in mind that HD "Event Units" only spawn where you see the Grid when viewing your Base in God Mode, and they don't spawn along the edges like Units from "Living Players". So the more edges you can use and the more space you can block "Unit Spawning" will help get those HD "Event" 3-Star Wins needed to unlock those Elite Data Fragments.
Recommend you investigate a "Corner Base Design" or "Edge Base Design" (if you are not doing so already) so as to limit your HD Attacks from only one to two sides.
In the end you have to decide what is the best base design for you based upon your game goals at anyone particular time.
A base designed to "protect resources" is often laid out different than say a base designed to "accumulate medals", although there are some base designs that do both.I look forward to seeing how you modify your base if/when you do....