"Minor" suggestions if you read/can, please.

[Enkidoh]

It's ok Con - your English was very good, so don't feel concerned.

As for your suggestions (warning, wall of text coming):

3. In a future "Lightning Strikes" event:

There is no information about whether or not SE will be bringing this event back in the future - previously, the first two times were as part of the cross-marketing for the Japanese and US/European release of Lightning Returns, and the third time as part of the celebrations for ARR's first year of service. Of course nothing is stopping SE from bringing the event back (maybe with the PC release of FFXIII/XIII-2/LR-FFXIII), but it's doubtful.

- 3.1. Lightning's Shield in "Lightning Returns" as a new Shield for all classes/jobs able to wield one.

Only GLA/PLD is capable of equipping all kinds of shields. CNJ/WHM and THM/BLM can only equip basic wooden square and round shields or leather targes, and then only if equipped with a single handed weapon. Both WHM and BLM relic weapons are two-handed, and as there is already complaints from players about not being able to glamour the existing FFXIII weapons to WHM and BLM relic, this would just be more trouble for SE to bother with sadly.

- 3.2. A ninja weapon based in Noel's in "XIII-2".

Although I can actually see this happening, I doubt it will, as it would be more work for SE's artists to have to add (especially as far as I can tell, there's no existing weapon model for ROG/NIN currently in the game that looks anything like Noel's FFXIII-2 weapon, meaning they'd have to make a new one from scratch, which probably wouldn't be worth the effort. But stranger things have happened.

4. "Heavensward":
- 4.1. Red Mage job.

I very much doubt RDM would ever come to FFXIV as it's by it's very nature, obsolete - early FF games it worked well as a 'jack-of-all-trades, master-of-none' type Job, but as FFXI showed, such a role does not work in an MMO game - RDM in FFXI was utterly useless until SE added Convert and spells like Refresh and Phalanx to it that it actually gained prestige and a suitable role in a party (and even then, that was basically 'mana battery'). Plus not to mention swords are already claimed by GLA/PLD so as there is no cross-class weapon use, I don't see RDM coming to this game, at least, not in a form you would be used to.

- 4.2. Gunblade job.

See my reply in this thread for more information.

- 4.3. Blazefire Saber with a Gunblade function.

A 'gun' function on that would not work - the Blazefire Saber is a GLA/PLD weapon in ARR, and thus, as that class cannot use guns, the gun component does not work. Unless a gunblade class is added (which I doubt very much), or, if gunblades become a specific form of weapon that GLA and PLD could equip, this probably would never happen I'm afraid.

5. A new Trial bringing back the original Nael Van Darnus battle from the 1.0 version.

Again, this won't happen - SE always stated the events connected to the Seventh Umbral Era in 1.0 would not be doable in ARR at all - as it is, the appearance of van Darnus (or at least, a poor copy) in the Second Coil I think would probably be the closest you'll get to experience that battle I'm afraid. The real van Darnus is dead. There is no way his 1.0 battle could even fit into ARR anymore (it was a stretch with the Coil version at it was).

6. I don't know if this is already in the game: the three Grand Companies' shields appeared in "Lightning Returns".

This is in the game I'm really happy to say - as are the weapons (the swords are level 50 and you required to have the highest rank in that Company before you can purchase them with GC seals), but the shields are an achievement reward (specifically, earn 500000 company seals for that GC).

I hope I didn't come across as nasty in this, as it was not my intention (and I'm really sorry if I did!), it's just that a lot of your suggestions have reasons why they would not be possible to be implemented in ARR I'm afraid, as far as I can see.