What's the deal with this? Was the game never designed to have naval invasions or is this issue just a bug waiting to be fixed?
It does feel pretty exploitative leaving cities barely guarded because you know the AI won't come by sea. Especially in this game since it seems that you can transport huge armies with just a couple ships. Actually, I haven't noticed any limits yet - a single ship seems able to carry a full stack of units.
I don't know, but when I started a grand campaign with Britain, the advisor told me about what I should do as Britain. I think she mentioned that I should be careful to protect my home island too... That would indicate at least that the game developers meant for actual invasion danger to exist. Unless the designers went "whatever, like they'll ever know that they can't get invaded...", which seems unlikely.
What do you need to recruit pikeman? I haven't gotten that far yet. I was thinking that line infantry seem pretty weak against them. It's not that they die rather easily, but the calvary go right through them and into whatever they were guarding.
I don't know what you need. When I started playing as Britain, I had access to pikemen right away. They're really difficult to use and most people don't like them much as they can be pretty weak. It's only useful if you can pull off a defense against a cavalry charge... And even then you have to make sure the formation is ready before they hit. And all units are painfully slow at changing formation.
I find this particular fact sort of disappointing, I mean, maybe it's realistic, but the AI is super fast at reacting to your changes. Like when all these natives are hanging juuuuuust outside of my cannons' range, and as soon as I try to bring the cannons closer (making them unusable in the process) they start charging at me... So I put the cannons back on the ground to shoot them now that they're in range, but the millisecond I click it they charge back outside of range. I mean, yeah, they would actually do that in real life, but can they take more than a millisecond to figure it out. It's a direct link between my clicking finger and them changing direction.
Same thing happens when I try to put my pikemen in a wall to receive a cavalry charge, or when I put my linesmen in square formation to defend against cavalry charges... They're facing me so I decide "let's prepare with this formation", as soon as I click the formation buttons, the enemy cavalry just changes direction and goes somewhere else (even when they're already charging sometimes), around my defensive formation, and attacks the cannons that I was trying to defend.
Sometimes you think "I'll get a volley out first". So you do that, you kill a few cavalry, then you click on square formation, but there's no way in hell it happens fast enough and you see your guys flying out the screen.