Not every rule in the book makes perfect sense, and various adaptations have been shared in forums.
One that was suggested on the Subbuteo Cricket Revival Club Facebook and has caught on is to cut-down the green wicket base to just a stump holder, doing away with the rule that the batsman can be caught out if the ball strikes the green base and deflects to a fielders catching base, even though the ball missed the bat.
Judging from the results posted in online forums, scores in the table-top game are generally a lot lower than in real life cricket. This adaptation evens up the balance between bowler and batter a bit. There’s an example at the foot of the page.
I’ll be expanding this page with some ideas that worked for me. If you have any suggestions please get in contact and I’ll add them to this page.