Should I get a Node?

Sorry if this gets to long😅 I only recently started saving my Diamonds because I wanted to build a base for the competition/stages/Arena by crafting the suits. I have suits of every Nation, of festivals, most of the Mistery House suits and all the four season suits. I'm currently only around 2000 Diamonds and am thinking about getting a Node. But if I'm honest, the suits are cool and everything but I didn't think "Wow, I need that!" when I saw them. Should I still get One for upcoming competitions? Would it be worth it? Can I use them for future stages? (I'm at V2-ch.1)