i was there Monday and thought the scoreboard was ok and did its job. I'm not sure what could be added to it that wasn't on display to help supporters.
1. Last wicket - name of fielder and bowler.
2. Bowling figures - every few overs
3. Scorecard - after every wicket
4. A match clock
5. Milestones, 50s, 100s. Partnerships
6. Par score
7. Run rate
8. Over rate
9. Current bowlers name
10. Different format for T20
This is of course a wish list.
But not sure why money is the problem. I thought ECB paid for the screen.