The buff to IJN 100mm guns means that with IFHE Akizuki, Kitakaze and Harugumo can pen 32mm of armor, so I was wondering if it's worth grinding down to the branch (I'm stuck at Isokaze because I didn't bother grinding earlier due to the "IJN DDs are bad" meme), if only to troll CAs and BBs with a hail of damaging 100mm HE spam. I know the IJN gunbotes are slow and sluggish, and I'm not sure if the opportunities for trolling CAs and BBs are worth the weaknesses against other DDs and the overall meta (For that matter I'm also grinding the RU DD line to Grozovoi and I'm at Gnevny right now).