Simple Advice for Raids/New Items
With the update:
*Rare Candy - save all, basically if you can walk it, hatch it, catch it, raid it, then you don't need to use them.
*Free Raids - don't waste your daily free raid pass. If you can't make the raids you want (level 3-4), and it's the end of the day, don't just rush to waste it on a 1-2 level raid, save it for the next day. You will be able to use it then, and be able to spin for another free pass. So basically 2 free passes in one day. But if you have already skipped a day, then you might have to waste it, then spin for another to use the next day. Only works conclusively.
*TMs - I would hold out on some of these, and i would definitely not destroy a perfectly good defensive moveset. The gym system will change, regardless if they do it because they messed up, or just to change things up (like this update), but it will happen. And you will be upset that you changed your defensive C/SeedBomb into a C/SolarBeam Eggs. There will be no getting that back, legacy.
*New items - such as rare candy, and TMs, i would use wisely, as stated before, but another reason is you don't know when Niantic will put the squeeze on these items. Making them harder to get, and/or taking them out of raids, and/or putting them in the shop.
Just some advice