A few balance suggestions.

[Haste]

There are already plans similar to what you suggest, although there are significant differences as well. Dropping refire rates on capitals could significantly improve server performance in battles - right now the server is awfully prone to crashing when two large forces (with capital ships) clash.

Weapons such as Battleship Solaris are as problematic as Battleship Primaries, really. As such, I'm a bigger fan of moving more towards (low refire) flaks and such than high-refire, high-speed laser guns. Flaks are - I find - much more consistent at hitting smaller ships, provided you know when and where to fire them. At the same time, they come with the convenient drawback of hitting allies and enemies alike. This makes the good old "hug your battleship" technique a lot less appealing (a nice bonus if you ask me).

A weapon like your railgun would need some severe drawbacks. That, and the range is just ridiculously long. I know it sounds very cool and flashy, but it just doesn't really fit in with the other weapons. In all likelihood, it'd need truly abysmal tracking speed and perhaps a tiny portion of dispersion (the stuff that makes bomber guns spread out when you fire them) to avoid it being a snub/gunboat insta-killing weapon.

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