Nopem I hate this. The world would be invaded of trash pokemon: when I look for a good pvp pokemon, I abandon like 100 before getting the right one. Imagine 100 pokemon abandoned per player: pure madness.
On my suggestion there were some requirements though... You could abandon only 3 pokemons on the wild every 24 hours, this way the ppl wouldnt spam the pokemons on the wild per example ^^ You cannot simply look at one sugestion and saying you hate it, you have to think first of what could make the suggestion better for it to work =)
1800*3= 5400
Let's say we calculate the 1500 people on the queue too
1500*3=4500
So we have 9900 Pokemon that are "trash" every day spamming Johto/Kanto.
First post's idea would involve box storage which would involve box access without the PokeCenter, that would be also bad.