While Fusillade is in effect you can only use earth spells. Check your spells under the "Conditions" tab and you will see "Is not in the Fusillade state" and "Is not in the Run-Down state". These conditions are on all air, fire, and active specialty spells for Rogue.
Otherwise yes, you can make a bomb glyph with 3 control. To make it in a single turn requires at least 9AP but you can place two bombs in one turn then the third on your next turn. Enemies will probably have moved far enough away from the first two bombs to make the glyph less effective though.
Bomber Fan and Boombot in lower levels can be very powerful. Bomber Fan gives you elemental damage for bomb explosions, you can get AP back from bomb detonations (effectively reducing how much AP you spend over time, making the already high base damage to cost ratio even better), but doing so as a mono-build can be difficult if you need to manually remove charges without Remote Control. If you were to hybrid with air and/or earth to go with your fire build I recommend Boomerang Dagger for AoE damage and charge removal at the same time, Machine Gun as an alternative to unranked Remote Control, or Blam for AoE damage and charge removal at the same time.
Bomb glyphs can be used in lower levels. I have no idea why so few are using it, but I doubt there are people using bomb detonations in low levels either. A good fire Rogue can be very powerful in lower levels since most enemies simply walk toward you but if you feel it will be too difficult you can respec for free at levels 30 and 80.
When they were new I heard secondary damage bonuses (AoE, long range, single target, close combat) apply based on how you use it (for example, using a spell whose max range is further than 2 but casting it on something adjacent to you counts as close combat) but I recently heard they work based on the AoE and range limitations on the spell itself (for example, a spell which has an area of effect of more than 1 space being counted as AoE even if only one target is damaged). I guess the only way to find out is to log in and check, I will edit the end of this post with what happens in a little bit.
Seems like secondary damage bonuses work based on the second idea. I had a character and a sidekick take some detonations without using Remote Control or anything that would modify the damage bonuses or resistances of anyone in the fight. When the character was the only one damaged by an explosion they took the same amount of damage as when both the character and sidekick were in the area of effect of the same bomb detonating. All scenarios were done without block activating or any critically summoned bombs. I had +86 AoE damage the whole time which would have been enough to see a difference.
Since the bomb glyph is a massive area of effect I would assume +AoE damage increases the glyph damage. I can check on that too.
Yes, +AoE secondary damage affects bomb glyph damage. I tried with and without my lv50 destruction (AoE damage) dragoturkey and the glyph did less damage without it equipped; this was also done on the same target without any other changes to damage or resist stats.
This post has been edited by Kakenshu - October 24, 2014, 22:06:15.