Voted "No".
Reasons:
- The current yard system isn't the problem; the map rates are. Back at the time when Shiny forms were temporarily more common, the map rates were as they were back in the old days. After this was dealt with, map rates were reduced. This is what prompted the rise in people making yards, rather than just searching on maps. Increase map rates by all means, but why should those who have put their hard work into yards suffer for it?
- On a more personal level, I just wouldn't have the time to maintain half, let alone all my yards.
And to those of you claiming it will increase the economy, how will it? You've said that people will find specials easier on maps, so what would be the use in buying yard access, or even specials off the market? If the rates are improved, the specials get more common, the market gets flooded, things lose prices. That helps how?
This is not the PBA that people once knew and loved. This is the modern PBA, yards are a core feature and attraction, and I don't think trying to retrace our steps or messing about with them will help improve the game. Instead, we should be focusing on other areas; ingame clans for example. Some do the challenges, most do nothing. Some make yards, but that's not gonna change whether yards expire or not. More clan-based events, and recognition of achievements, would go a long way.
Another idea would be to add the ORAS Mega Evolutions and 6th Generation Pokémon. Make them rare, non-releasable in yards, prizes for events, etc. Perhaps the Mega Stone for ORAS MEs could be a separate item, and have different requirements like a random number of battles per day, or like the current clan challenges but per account?
May add more to this in the future.Offtopic: It's interesting to see how many people who have voted "Yes" don't actually have yards they care about.