Greetings! I'm glad you've found your way to our applications section; I'm Duke Nicholas, your Minister for Applications and Settlement and /u/Captain_Mayday.
You may well have seen these already, but as a matter of course I'll point you in the direction of our FAQ:
viewtopic.php?f=13&t=192. If you haven't seen it already, it offers a good introduction to the basic principles and traditions of the Mercurian Empire. You may also want to check out our Applicant Introduction, where I go in-depth on the application process:
viewtopic.php?f=13&t=58.
Now, on to your application!
I think you've hit the nail on the head in regards to the attraction we see to Hermertia: a group of people who use Minecraft as a platform to create a world with its own history and lore. We've gone through our ups and downs, ebb and flows, and created a complex history derived from our actions in-game.
There would be no problem with you seeking to become and explorer; our community benefits from having a great diversity of players, and you'll find many lieges with different goals; this is why it's best to examine as many liege offers as possible so as to find the one that best suits your goals. You'll certainly find different architectural styles around the Empire; in my city of Gallen, the under-construction capital of Wysteria, I tend to make use of logs and polished stone:

In regards to our history, I see you've taken a look at our Timeline of the Old Empire! This is, unfortunately, a mere fragment of what our Imperial Library once contained; we have recently emerged from somewhat of a Dark Age where progress slowed, nobles became isolated, and many records were lost to history (in real life, our previous forums were hacked and we lost a great deal of our lore). The timeline you see there is the work of several diligent scribes who dug up an old, sometimes incomplete timeline and copied it down.
The War of the Chaos Orc is indeed over, and has been for many years. It took place in the Old World, where conflicts such as that one, wars that erupted for reasons now murky, were more common. Legend has it that the dispute began when a tribe of Orcs (a rare race now that began as a genetic experimentation eons ago) got into a dispute with a neighboring realm; under the leadership of Popret the Chaos Orc, the Orcs were victorious against Imperial forces for a time. The conflict culminated in one of the largest battles for the time.
You might also like to check out some of our highlights as a community here:
http://imgur.com/a/vGyJP#0 ; it shows off arguably our greatest strength in our great group of players.
If you have any questions about our history, please do ask: many of us have been around for yonks and can provide some historical context.
Finally, I would appreciate it if you could provide some answers to a few questions I typically ask of new applicants:
-Are you particular to building in certain biomes?
-If you ran into conflict where you and another player wanted to build in the same location, how would you resolve the issue?
I'll leave these thoughts with you good sir! Over the next bit you should see some more of the community respond to your application; many will no doubt have questions of their own. Again, I'll refer you to our discussion of the application process (
viewtopic.php?f=13&t=58) for the run-down of what you can expect next. While you're waiting, I absolutely encourage you to take a look around the forums at the many different aspects of life in Hermertia, and to shoot me a pm or reply here with any questions you might have.
Until then, I'll leave off with an introduction to the Imperial motto since time immemorial:
For Glory!
P.S Would you like your forum name changed to Squire, good sir?