I really like the way the core ships work in TOA. They look awesome in comparison to the ones from DL and they are actually useful now, being automatically upgraded when a new tech is researched.
However, there is one thing that bothers me a bit:
In some games when I, let's say, have Large ships armed with beam weaponry (Destroyer-class) and then put the focus on missile weapons (Battleship-class) in the shipyard-screen, I can still retain the old destroyer design, resulting in something like "Destroyer M5" and "Battleship M1" in the list of the shipyard-screen. This is cool, because it allows me to produce differently ships the same size, but with different armament at the same time.
In other games, upon developing new primary weaponry, all the older designs are deleted, thus resulting in something like "Battleship M6" being the first type of Large missile ship with the "Destroyers" being completely gone from the list. This is not so good.
Also, sometimes "Defender" is the only small 3 Logistics-points ship available, with ships others not appearing (sorry, can't remember al the names of Tiny and Small ships, because it is only slightly annoying and Medium and Large ships usually form the heart of my fleet, the smaller ones being mostly unimportant).
Can anyone please tell me what I need to do in order for obsolete computer core ship types to remain available for construction? Thanks!