Fractals in themselves are a really cool part of GW2, I'm not speaking about instabilities but more about the fractal design (map and story (at least objectives and how it leads you to the end)). Several of them are beautiful like shattered observatory, cliffside, thaumanova or chaos isles. It definitely add something to the game, of course they aren't as big as dungeons but they are okay. Thaumanova is for me mini - Crucible of Eternity. And urban battleground can be linked with ascalonian catacombs.
We have 100 difficulty scales within fractals divided into 4 tiers so 25 fractals per tier BUT we only have 20 different fractals. So here I come, why not completing those last five "unused" slots with real fractals? Dunno several ideas are possible: Largos fractal, Tengu fractal, Mursaat fractal, Sylvrai fractal, Fall of Quora Sum fractal....
And so was wondering, we could save more free slots for new fractals:
Example 1: Aetherblade fractal fusion with Captain Mai Trin fractal like the original dungeon.
Example 2: Molten furnace fractal fusion with Molten Boss Fractal.
That way we save 2 more slots for new fractals.
Now about instabilities: I don't really see what value they bring to fractals. I really feel like any tier is the same only AR is changing, whereas it would be more challenging if higher tier = More foes and some veterans are turned into champions. It could add some stunning mechanics, like as example with swampland fractal: If you play it at T3/T4 they are thick fogs everywhere making hard to see anything. for aetherblade fractal they are waiting for us with lightning cannons in some corners...
This thread could be about suggesting new fractals, but firstly was created to discuss about how fractals can be enhanced. I definitely think adding more and more instabilities isn't the solution. Of course it doesn't annoy me to play with flux bomb or last laugh, but now it's a mess.