Alright I played some more, so I have more to say:
Here's my best score when I play the game from level 1
And Here's my New Record after trying the game starting from level 20 for the first time
I understand speed of panels spawned is tied to Level, and Level increases ever 10 panels collected. The Score per collected panel is 10 * level. As for panels collected by the white combo field is every panel in white field * 10 * level * combo number.
(That information is not given to player in the tutorial, nor in arcade mode starting window as far as i can tell, and I think it is pretty important)
This means the lower Levels encourage much slower gameplay focusing on getting good combos, and not clearing the board of panels as soon as they appear.
With the game becoming progressively faster the more panels you collect to the point where players cannot keep up (unless there is some high speed cap which advanced players can get used to) it means any panel collected not through combo is not worth its score, because it speeds up your defeat.
With the point above kept it mind the arcade mode has 2 possible strategies (at least at my skill level)
First one is playing from level 1, and only trying to get combos with panels inside white field, and avoiding just clearing panels when not needed.
Second strategy is starting at much higher level, where the board is empty, and the game is going to go quicker, but you got a better chance at setting up for a much higher score combo.
I do not know how other players feel about this, and I am relatively new player compared to many of your fans I bet, but I think level increases should be tied to Score, and not number of panels collected. I understand it would be a very radical change, and veteran players would probably not like it, but it is maybe something to think about when designing different arcade modes, or customizations.