i have two minor suggestions
1) the field completion in the query window picks up the first table in the window even if it the query is commented out. Not a big problem but sometimes i am digging into data and have queries which i am commenting out so i can go back to them if needed.
2) the query editor shows a line as commented out with two dashes rather than two dashes and a space. very small problem but i do admit it confused me when i first started with MySQL and HeideSQL.
Finally -- thanks for a great product!