I've a lot of ideas..gonna write some or else I might forget them.

You mentioned that with each patch there will be bug fixes. I'm impressed that with an ATI 4870 I haven't experienced a single bug in Pyroblazer. Quite a great achievement to release a game in which no annoyingly noticable bug can be spotted

, usually I can always notice a couple of bugs in new games.
here are some ideas:
Tournament...tournaments are the best in my opinion. Especielly the last race and you know you've to get 1st or 2nd place. I really like the Last One mode, it's thrilling.
Here's my idea regarding tournaments, I have only completed Medium. So there might be more secrets I haven't seen? in that case my idea might already be in the game:
Completing Easy (and all 19 tournaments)
-> rewards an easy Special Blazer
Completing Medium (and all 19 tournaments)
-> rewards a medum Special Blazer
Completing Hard (and all 19 tournaments)
-> rewards a hard Special Blazer
It would add a lot more replay value because it would feel rewarding playing through all three tournaments difficulties. If a Lap time highscore is added, it would make it less painful to play through the tournament because you could strive to get the best lap times.
I also think you should be able to create your own tournaments in Single Race (choose more than one track).
Now time trial:
I think that the time trial system could have been different. At the start you only have EASY, if you beat EASY you unlock MEDIUM and so on... When you are able to beat hard:
Completing hard time trial --> should give a reward
Considering the amount of tracks the reward could give a score (let's call it X). You can make all sort of interesting things here... 5X could unlock options in Standard Race, such as Ultra Turbo. 10X could unlock Infinite ammo option in Standard Race (as mentioned in my first post). X15 could reward you with a new blazer. X20 could give you a new Standard Race option such as 1hp mode. All sorts of fun stuff can be added this way. It also adds a whole lot of replay value to the game.