Hey there!
Before I explain my idea, I'd like to state that this idea would have an on or off switch in the clan options tab, in which the leader can decide whether or not they would like this in their clan.
Also, this idea would probably be more focused in higher level clans because high level players need specific troops in their attacks to ensure success.
Here's the idea: Say I request for 2 witches, 1 wizard, and 2 archers. In the request tab, when i hit request troops, a window would pop up with a picture of each troop, similar to what the donating tab looks like. I would hit the witch picture twice, the wizard tab once, and the archer tab twice, then I'd hit request. When the request pops up, the donator would hit donate, and then only the troops I picked would be available. Say 2 clan mates both try to donate a wizard, even though I only asked for one. Normally both would go in, but because I only hit the wizard button once in my request, the wizard picture would go dark after one was donated, this way after I receive 2 archers no one can donate a third accidentally.
This isn't a huge issue, and the reason it has an on and off switch is because I know in lower clans people don't care as much about this.
There could also be a feature where you don't have to tap it and you can just enter the number you want so if somebody wants 30 archers they don't have to hit the archer tab 30 times.
Why would this be good? Because where there are difficult requests such as 5 wizards and 10 archers, people could try to donate at the same time and the person could accidentally get 7 wizards. It would prevent donation mistakes so they person can get what they need.
