1mana monsters

When War was released, there was an initial 'uproar' about Boomboxen being much better than the other 1mana monsters - it the cost of just a few statpoints (relative to Ks/evils/grems) they had 1 extra sac and an admittedly minor ability.

webrunner stated something vaguely along the lines of wanting to have all the 1 mana monsters at Boomboxen's level.

Seeing as the new 1/1 monsters are way above the current 1mana monsters, and arguably above the 2mana monsters, this might be a good time for those much needed boosts.

Question is, what's acceptable? Just stats/sac? Are minor Boomboxen-esque (mostly useless but occasionally useful) abilities okay? What about mechanics/abilities that weren't available in that expansion to start with?

Once we have the answer to this, our 'goal', we'll be able to work towards it.

Examples for Lowly Slime:
* Change stats to 14/14?
* Change sac to 3?
* Destroyed: Your other slimes gain +1/+1? (New ability, changes concept)
* Lowly Slime loses this ability: Target slime gets +4/+4? (Temp stats and ability loss not in Prime, also changes concept)
* Allying 7: Target player puts the bottommost slime in their deck to the top, or target Face Down slime is revealed and loses all of its abilities until the owner's next sacrifice phase? (Completely random abilities from a set that's not even released yet, concept out the window)

How far can we go?
Edit:Merged both of my posts