It's not the number of reactions available to an element that makes it amusing.

In summary, it's how dynamic the element itself is, and what it has to offer than nothing else does already.

EXOT is awesome, for example, because its pressure generation is directly proportionate to its tmp2 value (which means you can hit it with ELEC to generate more and more pressure), but eventually explodes when oversaturated.

It changes colors according to its temperature along a rainbow scale, can be easily changed to form basic Replicate fluid so that it turns itself into whatever it is touching, regularly flashes its glow on and off (in order to replace an older removed feature of LCRY that was removed due to it being an overflow glitch.)

...And it turns solid when cooled without actually being a second element, at which point it makes more negative pressure than positive. o_o

The latest element additions have just raised the bar for newer elements, and most features added into the game would most ideally be added into older elements to prevent the game UI from being cluttered with one-trick ponies. Having individual elements with a set number of reactions doesn't make them automatically interface in some meaningful way with -all- other elements, especially not uniquely.

...And I see way too many newbies just drawing random elements on the screen and being disappointed when -nothing- at all happens.

Edit: And magic dust isn't itself a bad idea, a single element that makes changes to all other elements while itself being unremarkable is basically what NEUT was archetypically way back before we got all these fancy elements.

It isn't 'becoming' too unrealistic :P Have you noticed how quickly SPRK travels on its own, and how quickly PHOT travels?

...Or the fact that GAS generates pressure forever and can suck in infinite pressure, no matter what?