So playing as Spain has actually been very fun. I kept losing great power status; so far I've lost it three times I lost it and then regained it. I've seen the "we are losing great power status" countless times. Despite very little combat happening, its really felt like a desperate race for that 8 place slot.
Ironically, my real breakthrough was a war with France. There was an international crisis over the liberation of Poland; I joined the UK in hopes that they would resolve it quickly and I could go on with my life without losing the 22 prestige. Turned out that the moment I gain great power status and have to deal with this bullshit is the moment a crisis actually goes hot. UK+NGF+Belgium+Me Vs Russia+France+Austria. Although vastly weaker than the other factions, I did have a series of forts across the French border and a cutting-edge navy of commerce raiders. The few French armies that attacked me I drowned under a sea of regulars, with the reserves standing by in case things got hairy. The UK helped, although this may have screwed me later in the war as the French committed troops to my meaningless front.
Meanwhile the ocean to my south was a filled with Russian, UK, and NGF navies fighting each other. I had a mere 13 commerce raiders and 5 older ships but I made them count, darting in to help my allies or fight transports while running from any losing battles. At one point I picked on 18 Galleons and defeated them with the 13 commerce raiders. These fights catapulted me up past even the 8th great power slot into the 7th and then the 6th.
Unfortunately the war on the mainland was going badly. What I hadn't counted on when I picked my side is that none of the allies except the NGF bordered Russia, and the NGF ALSO bordered France. Their forces were sandwhiched and an occupation began from both sides. The UK armies using my lands as a beachhead to attack France were defeated, causing larger French forces to to turn on me for occupation. I found an exposed army and attacked with everything...
...everything died, pretty much. I want to say that they beat us because of their better tech, or their 3:1 artillery advantage. Or the fact that they were attacking on plain. But to be honest, I'm pretty sure its because every time I looked at the fight they had at least a 5 point advantage on the dice rolls. It was still a decently even fight despite that, I mean we had a huge numbers advantage and the French hadn't completely filled up the front. Still, no savescumming (except due to the bankruptcy glitch, TAKE OUT A LOAN BEFORE YOU LOSE MONEY TO AN EVENT OPTION), so I rolled with it.
My navy was never destroyed but my armies were looking unlikely to recover to beat even one French stack. I pulled back and hoped for the best. The "best" turned out to be the UK surrendering the losing war before their allies were completely annihilated. They were humiliated, and now have less than 50 prestige. They dropped down to 2nd and later to 3rd. Austria was devastated beyond any hope of recovering, the NGF somehow ended up OK despite getting brutalized militarily. But the real loser was Belgium. For some reason Russia added a cut down to size wargoal against poor Belgium; they were devastated in the war, lost their entire military and the ability to recruit new regiments, their economy is done for and they lost all their prestige. And to think they used to be in the running for great power
So, because of our high-profile victories in the ultimately hopeless fight to liberate Poland, Spain is now seen as the 5th most prestigous country in the world. That combined with Belgium and Austria being taken out of the running for GP means that Spain now has a secure place on the world stage... at least for a few years. Just in time for Japan to swoop in and take a slot. My military and industry are both weak (although this improved a bit since the war); I have more prestige then military and industry score combined. Spain is basically a paper tiger seen as impressive but actually second-rate. My government has a policy of never losing face, ever, even it means spending large amounts of money.
A decade later, a plan I set in motion a while back to shoot forward in naval tech and then slowly assemble a navy knowing it won't be obslete for a while has paid off and I now have my first ironclad as of 1873, with many more pending. Unfortunately my plans to improve literacy overshot and I now have .7% more clergy members than the 2% the internet says I need, and massive education spending which I'll have to cut back on. Hopefully the clergy won't hate me even more than they currently do for that. I've taken out 63K in loans and that needs to change. Oh, and Washington was recently taken by anarcho-liberal rebels and the US government now believes in hardcore free trade, atheism, and full citizenship for everyone. Huh.