>.> Can't be that bad, can it? 
Welp, waiting to see how Test rolls out before I go through and adjust a few things.
Current known issues:
-Re-examining a few mobs (specifically the Defenders and Seers) to see if there's something I can do to keep the theme going, and not overpower them at the same time.
-Minor dialogue slip-ups - bits of repetition. Will review that in the future.
That said, when I do actually start adjusting mobs, I'll likely do it with a republish of the current Synaptic Field Test one-shot arc to save people the headache of going through all four missions. May also tweak a few of the objectives after another passthrough. I think they're fine now, but I'm not 100%.
Enemy group adjusted - though, if you're wanting to see just those changes, the Synaptic Field Test arc (#53003) is probably better suited to that purpose.
It's just one mission, and now forces spawning of both boss types for the solo player.
EDIT: Though, they're not required objectives. Just finding/clicking the glowie in that missions SHOULD end it. But, as it's a field test of the enemy group.. busting up as many of them as possible is recommended and encouraged.
Going to go through and make some more plot revisions. I was debating doing it for a while, but I'd been sort of caught up in playing other people's arcs and let it slip my mind. It's not as tight in places as I'd like it.
May also try to add some additional formating things, which requires a bit more research on my part. Streamlining and improving objectives is also going to be a goal, while maintaining the overall 'feel' of the arc itself. Also going to adjust the short-description of it in-game to more accurately reflect that feel.
Go figure, I finally managed to complete it. Functionally and artistically to my satisfaction, I've finally republished the arc.
Competitive Interests
by @Foxfirega
ArcID: 105556
Length: Long (4 missions)
Morality: Villainous
Description: Someone's paying some big money to investigate a small research firm in the Rogue Isles, with some big secrets...
(DISCLAIMER: This arc should be moderately difficult to solo, and still prove a challenge on a team. The enemy group has been extensively tested in arc #53003 - Synaptic Field Test, and has been completed by a level 4 blaster, as well as various 50's and a few people in the middle. I recommend, in particular, keeping an eye out for the Controllers and Corrupters, as those two are the most likely to cause frustration, though every AT has a different bane in this arc.
What has NOT been tested is doing this arc in a large team, though all testers have stated that the more the custom group can stack up, the more of a threat they pose. You have been warned.)