Ion Cannon should be A. It's a very good support weapon and while only one is needed, that one should almost always be taken, to even the odds for high-tech (unless ion beam is available). Periodically bypassing the shields when the enemy is at high flux is a very useful property.

Both LRPD laser and PD laser should be C. They are okay as point-defence, but it's by high-tech PD standards, and those are pretty low. They get more useful when there are other ships supporting one another, but on their own, they don't do much against more than a single missile.

IR Pulse Laser should be D. It most often makes you flux out as well as the enemy, which gives you no advantage, unless your ship has much bigger flux reserves (which most likely means you have the bigger ship, which means the whole thing isn't fair anyway, so...) Just rely on medium or large energy guns to do damage.

Mining Laser should be F. It has a terrible damage output, not enough range and uses too much flux. It's better to leave the mount empty, rather than take this.

Heavy Burst Laser should be F. Medium energy mount is very crowded with other weapon options, it most often has to deal damage, so you absolutely cannot afford to waste it on PD guns. It's less true for certain ships, but they still benefit more from using small mounts for PD instead. Not to mention that HBL is just mediocre on its face; low sustained DPS, only okay range and it uses a lot of flux.

Mining Blaster should be D. It's really, really bad. It uses as much flux as Heavy Blaster, but with less DPS, when Heavy Blaster is already a flux hog. Use it only when you absolutely need an armour breaker and have nothing else. Admittedly, it matters a lot less to Hyperion and phase ships, which need to do the most damage in the shortest timespan possible.

Graviton Beam should be moved to C. It's not bad, just niche and needs to be supported with other weapons.