Idea - Troop fusion

I know it has been suggested already but this is my variation of it.
My idea is to have a building that fuses troops. It would be unlocked at Town Hall 8 or something and the selection part will be a bit like a barracks where you select troops, but you only select two and you pay the sum of the two added up plus about 50%. The fusing would take a few days depending on the troops and not all troops can fuse together, if they don't make anything, you just get the troops back after a day or so, and have to try and figure out which troops go with which.

Mostly, the stats would be a few stats from one troop and a few from the other, eg. troop A fused with troop B makes troop C, which has A's damage per second and speed, but B's hitpoints and favorite target.

Some examples of fused troops:
Wizard Balloon ~ damage of wizard, health of wizard but speed and flight ability of balloon. Would take about 1 day to fuse and cost about 5500 Elixir.
Goblin Archers ~ Archer's stats but x2 on resources and goblin speed. Would take about 1 day to fuse and about 250 Elixir to fuse
Giant P.E.K.K.A. ~ Giants Attack, P.E.K.K.A.'s defense and speed. Would take about 5 days to fuse and cost around 7000 Elixir

And potential for lots more.

Tell me what you think, thanks!

its not a bad idea but it needs more info: what are the statistics of each newly fusioned troop? can you use them many times or just once? (because the giant-pekka looks kinda to OP but it depends of his stats)

Yeah, I'm still considering the info and stats and stuff, I am editing every now and then, and you can use them unlimited times, but as I said they take a long time to train