Use dimensional detail with a purpose
Use dimensional detail to give brand imagery a sense of material presence, with a clear reason for the treatment. Richly rendered surfaces and animation can make a familiar symbol feel more tangible: Citroen's logo animations render its badge in materials ranging from water to plants. BBC Two's idents, created by Superunion, use 3D to attract attention while expressing the channel's diversity and creativity.
The useful distinction is between an appealing surface and a treatment that communicates something about the brand. Choose depth, texture and movement for the impression they create and the message they support. Design extends beyond appearance to language, sound, user experience and even the feel of paper. Treat dimensional imagery as part of that wider sensory experience, using it to make the brand's story engaging and relatable.
Sources: Trendspotting: What’s Caught Our Eye in Design, Creating connections through design