Building upgrades

I would like to see on my building a blue or green arrow,

like if you are th9 you get a blue arrow if you can upgrade the building to maximum of that townhall. So like an xbow is maxed at lvl3 at th9, that when it's lvl 2 there is a blue arrow that you can upgrade it and when it's lvl3 the arrow disapeers.

and a green arrow when you have the resources to upgrade the building. Just like in boom beach when, you have enough resources you get an arrow that you can upgrade the building.

Personally, I can keep track of my upgrades without such a feature.. and I think the base would look weird with all these flashing arrows.. making the base look like a giant Christmas tree. If something is in BB, doesn't necessarily mean it should also be in clash.