UPGRADED Spring Traps

When permanent traps and trap upgrades were added the the game, Supercell stated that Spring Traps currently will not have upgrades, but may in the future. I think it would be cool to upgrade them.

I know Supercell has more important things to do, but this would only take a few days to set up, and could just be an add-on to a larger update.

What would the upgrades do?
Upgrades to the Spring Trap could be many possible things, but what I thought of is that it could be used to spring more troops (currently will only spring 3 troops maximum for 1 Spring Trap) Here's what I think:

Level 1: 3 Troops Max
Level 2: 4 Troops Max
Level 3: 5 Troops Max
Level 4: 6 Troops Max
Level 5: 7 Troops Max
Level 6: 8 Troops Max

(Obviously reasonable upgrade costs.)

How would it look?

I was thinking every few levels the spring trap would change colors, such as:

Level 1-2: Tan (current color)
Level 3-4: Light Brown
Level 5: Brown
Level 6: Dark Brown or Black

Thank you for spending time to read this! :)

Spring traps operate based on troop slots, not troops. Currently they will bounce up to 15 troop slots. Meaning 15 archers, 3 giants, 0 pekkas.

Upgrading them might be possible where each upgrade would increase that value by 1. For example level 1 = 15 slots, level 6 = 20 slots.

no, it would ruin even 50%'s maxed out bases.

As a town hall 8, my favorite attacking strategy is giant-healer-wizard and it took a very long to master it, and I already have problems with a single spring traps being able to get rid of 3 of my giants, but I work around it and still decimate villages. The last thing I want is 6 of my giants getting sprung away from one spring trap, making my attacking strategy obsolete.