Welcome to the Community, shogan.
I can certainly understand how a Split column could be useful on your Reclassify Transactions screen and have submitted a suggestion about it as of today.
You can also submit your own feature requests while signed in.
Here's how:
- Use the Gear icon, then go to Feedback.
- Enter your suggestion(s) in the Have feedback? window.
- If necessary, attach a file with your Camera icon.
- Select Next.

Your feedback's definitely valuable to Intuit. It will be reviewed by our Product Development team and considered in future updates. You can stay up-to-date with the latest news about your product by reviewing Intuit's Product Updates webpage.
I'll be here to help if there's any questions. Have a lovely Thursday!