"Powering up defenders, Yes or no?"

#PokemonGO: Hey all,So my city is infested with level 40 players with maxed out defenders. You have the blissey + chansey + snorlax and then the other 3 are a mix of Slaking/Metagross/Salamence/Milotic. So gyms here easily reach ~15k total CP. Of course CP doesnt mean much(looking at you, Chansey...), but just a good indicator that these gyms mean businessI already have pretty good attackers with great IVs. Only thing left in terms of gyms is to work on defenders. I have a couple blisseys/snorlaxes and 1 chansey. I have a ~2.6k CP Slaking that I've been walking. I have a Feebas I could evolve right now. I could also work on powering up Metagross or evolving Salamence.So... as the title states, will powering up these pokemons be worth the stardust and rare candies? I could lean either way if I'm being honest but I just need some feedback. What's your opinion on this? Do you work on powering up your defenders? via /r/TheSilphRoad https://ift.tt/2xlBgMx