The Text Limitation - As you're aware there is a limitation in how much text you can include in the body of a snippet. This is disappointing as there may be paragraphs you send quite often that don't necessarily qualify to be a template. For example, we have a variety of plans each with their own unique product offerings. A snippet would be a helpful tool for quickly inserting the cost of a specific plan plus it's lineup of products. The text limitation prevents this ability.
Totally hear you! This limit was created a long time ago and it's been a long time coming for us to update this. Some good news, we are planning to increase the character limit in snippets from 500 characters to 2500 characters. Once this is queued up it should not take much development time to update.