Im waiting for the price to drop, either via actual cash value, or via added features to the vehicle while price remains the same. If it doesnt happen this quarter, then Ill wait until next quarter. Model Y will change things for sure. The several record setting quarters in a row, in order to keep that up they will need to provide motivation to buyers. From what I understand Elon is personally vested in stock price because at certain point he gets 30% (or something like that of Tesla, making him the richest person on the planet), but for that to happen he has to keep stock where it is or keep increasing it. Car sales is the main way to do that.
The trigger point for me is when the EV credit is effectively reinstated via a price drop. I dunno, maybe Im the only one that is ok with waiting a few months or even a year before buying one. I have a perfectly working car now.
Huge waiting motivator for me is the new battery tech that is supposed to start going into the cars this summer. So all things considered (current car is fine, and free), new battery tech that is supposed to last twice as long (chemical structure not charge), and potential price drops, are all making it easy to wait.
I personally do not see any price increases because then Model 3 would be more expensive than the roomier and newer Model Y. And increasing price on both seems like stock suicide. If anything I can see Model 3 price going down once Model Y starts delivery. Model Y will sell itself by being new and shiny. Model 3 sales will keep up through motivations. Currently 3 and Y are priced surprisingly close together. Add cybertruck to all this, I see Model 3 needing a lot of boost to keep selling like hot cakes when people will have 3 choices for around the same price instead of the only choice.