We already have different calibers thanks to purchasing from all over the world but it would make sense to try to at least get the same caliber in the post 1934 designs.
Where the opportunity exists, yes. But it's more important to minimize the number of calibers in use in your fleet, I think.
It seems Itheko started a craze in Latin America :-) Lets see if the fever moves to the other small nations. A good way to showcase our needs. '-)
The trend won't make it over to my part of the world. Though I'm happy to comment on your plans, I prefer to keep mine close to my chest, lest I spoil storylines.
Something I'm sensing from all of you guys is a perceived need to get out and buy used cruisers and battleships ASAP. Consequently, you all seem to be heading towards top heavy fleets centred on a crazy mix of old (if refurbished) hulls, with limited infrastructure available to support it. This is not something I'd recommend, for a few reasons:
-The usual gripe about not having enough escorts and light forces, which we've already discussed.
-The mix of major warships - 2 Limas, 1 Huascar, 1 new BB, 1 Callao, and 1 new CA - suggests you're going to have difficulty operating them together. They'll all have different speeds, cruising radii, armor schemes, and armaments. There won't be a lot of common strengths to base your strategy around, but there will always be weaknesses that hold you back.
-Lack of infrastructure. You've got two drydocks that can deal with a destroyer or anything larger; just one can handle a cruiser or larger, and neither of them are likely to be big enough to handle a new heavy cruiser or battleship. You might have a sizeable fleet, but it might take you years to repair the damage incurred in a single battle.
Similarly, you've got a lot of small slipways you're not making use of. Expand some, or keep them busy with small projects.
-Finally: the world is absolutely covered with battleships right now. I don't think the Perus and Mexicos of the world need to be making hasty moves to buy something. It'll be a buyer's market in a couple of years, as the major powers compete to sell for a price better than scrap value to a very small pool of small nations who, collectively, will only buy a fraction of the BBs that hit the market. Shop around - but don't buy big stuff until you have the small stuff and infrastructure to back it up.