Which I think is great as it gives you something to work towards. New gear/equipment is a welcome addition with continual play. Even if you end up selling it for cash. I've not been saving any of them if I'm honest, but with 1.5 coming soon, I'm going to start saving them.
Why save them? Just open them and either use the contents if its useful or sell.
No changes will be made to caches going to 1.5 and no modifications to gs229 gear will happen. Exception being the possibility of 229 weapons and the new gearset in 229, but considering the gs is going up to 256, it will still require farming.