Upgrade Traps

I think u should be able to upgrade traps...for example

[Spring Trap Level 2: 100K Gold upgrade, darker wood, can how throw 2x more troops]
[Spring Trap Level 3: 250K Gold upgrade, black metal with skull, can throw 3x more troops]
Could you imagine watching one spring trap throw SIX GIANTS!!! Totally worth upgrading

[Bomb level 2: 50K upgrade, slighlty bigger, can now leave a goblin with a slither of health]
[Bomb level 3: 200K upgrade, Gold Bomb, can now one shot a goblin]
You think that your goblins have an easy stroll to the DE storage when one bomb, and all 10 are dead...

[Giant Bomb level 2: 200K upgrade, over filling barrels with powder, takes half of a giants health]
[Giant Bomb level 3: 500K upgrade, painted with red and black like maxed air defense, leaves giant with sliver of health]
Your giants have already taken some damage when BOOM! All six of them are gone...

[Air bomb level 2: 100K upgrade, four balloons, takes half of healers health]
[Air bomb level 3: 300K upgrade, four balloons-two barrels, can one shot a level 4 balloon]
Your giant crowd of balloons are smashing, until one Air Bomb ruins the fun...

[Seeking Air Mine level 2: 500 DE upgrade, Golden bomb, one shots a healer]
[Seeking Air Mine level 3: 1000 DE upgrade, Two bombs, can take 3/4 of a level 2 dragons health]
Dragon OP?? Hahahaha not any more...

way to OP. and are the upgrades permanent or 1 time use?

Yes once upgraded you would re-get it once used and it would still be the level you upgraded. Looking back ai agree its OP so i think the updates should change to add a couple zeros on the end of those numbers...

These seem way too strong...

So good idea to upgrade traps just that my stats are too strong? Or bad idea all together?

I'm fine with the idea of upgrading traps, but the stats seem a bit too high.