First, read this thread- http://forums.spiralknights.com/en/node/112218
I like the idea of bombs being able to at least damage certain bosses but I don't think bombers need to be up to par on every boss... just the best at taking on some bosses. So I've designed two boss fights that favors bombs far more heavily than swords or guns-
T3 Construct+Slime Boss: The Grey Goo
What it is:
About the size of the royal jelly but.. a giant glop drop!
When it is hit:
It shrinks a little bit, and parts fly off, creating smaller, silvery glop drops.
Silver glop drop:
-Same as a normal glop drop in terms of attack+move mode and stand still + vulnerable mode
-Instead of targetting knights, merges as if a giant lichen colony
-Any above a size of '2' can only be broken up, not killed
-Neutral to elemental/shadow/normal, resists piercing
How many glop drops are there? Roughly a thousand or so.
Other things spawned during this fight: Various construct
Another Example: possessed gremlin colony
What it is:
A large collection of gremlins that share a common sentience. Devilites made it happen :D
When you go to attack:
All of the gremlins share a single health bar, but have a ton of health!
How the gremlins function:
The gremlins target one knight, and all go after that one player until they are dead. The gremlins wait for one another, and then set up + launch a unified attack. If there are 5 mortafires, they all attack around that knight, while the 5 thwackers all get ready to do their spin attack, and the 5 menders open up healing circles around where the thwackers will stand. Basically, they'd have formations consisting of set actions that they'd attempt to go through with.
Why these examples work
Because bombs are good at hitting multiple targets at once! If there are 50 slimes all trying to form back and they get caught by big angry bomb, that's way more effective than trying to individually brandish charge them all in small clusters.. Or if you can get all of those gremlins into one small area and dark briar barrage them, you've effectively multiplied your damage by a ton!
Generally what comes to mind when you hear boss is big, scary, dangerous guy. By definition a boss is singular. They are not really made to use their extreme AOE damage to take down a single figure. That's why they are bombs. We have already been granted arsenal stations and extra weapon slots, leaving plenty of room to carry a bomb and use it effectively in the area you are in, while having a sword/gun for the boss. I really like The Greg Goo idea though. Sounds like something I would like to see. We need more Greg in spiral knights. Not including the swarm, how many gray enemy's and items do you see? Almost none. (Also, glacious would be way OP on The Gray Goo, just saying)