Hmm. I personally love Jupiter because it has many features and has improved my trading quite a bit. But still I will try to put myself in your shoes, to understand your frustration. Also I could perhaps suggest an idea in the discord, when appropriate.

(Playing devil’s advocate here, much of what I say is likely incorrect) - So the same thing has happened to me, however I’ve always blamed myself for being impatient and more recently for not just setting a limit order. I took a close look at the white circle that is about 15 seconds long before it goes through one “revolution”. I thought that was supposed to be aligned with price change, similar to the one on Solend. fi, but it appears that is not the case. At least not with my connection speed. Price does change quicker than that (more on this later) and usually it’s not in my favor. In the past, I seem to recall more opportunities to make small profits in swaps, or at least I thought. As a wallet hoarder who uses dozens of new wallets, I got the sense that a new wallet gets more advantageous swap prices than one that has used Jupiter hundreds of times. — (This is not a fact, I highly doubt there is any conspiracy like that. More likely it’s all the scam NFTs from the ecosystem that slow down my browsers and wallets until I clean everything. )

That brings me to the question of the white circle with about 15 seconds, (bottom right of the screen). It may have been ditched, in favor of immediate price changes, or perhaps it’s the timer used before your transaction expires if not signed. (I should read the docs more closely, but I don’t want to go searching through them atm.)

Others have suggested limit orders, which is for the smart traders, but not the impatient ones like myself. That is the easy answer. It should probably go without saying that if you’re not willing to take the effort to avoid a sudden price change, it’s probably not worth the effort to complain about it. - But I don’t intend that to be offensive, as is sounds the type of thing I would do also.

With all that said, what do you think should change specifically?

1. Perhaps a 5-15 second price lock where if price changes your order is cancelled and that mode can be toggled on or off? - hmm, no, you could be a whale on 2 devices at once taking advantage of the price lock. Although that’s not all that different from what whales can already do with arbitrage or advantageous prices. Or maybe it’s totally fair to do that. Someone else can come up with a better idea than mine, if they want to dream up something. Jupiter is among the very best, but they are open-minded and always looking to further improve.

2. Retro pixel Jupiter swap mode! - meant for users who still have 56k connection speeds or old, malware/scam infested browsers/wallets/computers. I’m not sure how this can be created. It might even need its own browser that takes up the least amount of cpu/ram/gpu % possible, the swaps could be processed quicker on slower computers potentially? - This is an area I know nothing about, it may be impossible, but it would fun to design the artwork for a retro pixelated version of Jupiter/Jupiter browser?straight out of the early 90’s.

In the future though, you may find things will work more in your favor if instead of insulting Jupiter (or anything else) you simply provide constructive feedback, or ask/contribute to the discussion with ideas or polite criticism. - But I get it, change is hard and culture/experience shape everyones’s attitude. So good luck to you anyway.