(The title should have said "Loong Max Tipple 3000mAh 20C 2s lipos - with connectors please", but the forum cut it short)
The 3000mAh size 2s lipos used to come with the 3.5mm bullet connectors - I bought three, and swapped the connector in my glider to match. While those batteries were being sold without any connectors, recently, I didn't buy any. If the next batch come without connectors, I probably won't buy any of those either.
I found the biggest problem was if I got any solder at all on the outside of the bullets, they wouldn't fit in the red plastic connector shells. Also, the wires on the larger capacity batteries are very thick so it's hard enough enough for the average hobbyist to fit any type of connector to them.
I'm sure people will disagree about what sort of connectors they should have on them, but we're aware that you no longer use Deans, presumably for copyright reasons. Either 4mm or 3.5mm bullets would have been okay but I really don't feel like swapping connectors on the ones I have already, so personally, I hope you start fitting the 3.5mm ones again.
Anyone who doesn't want the connectors they come with can easily clip them off (one wire at a time, people - don't try cutting straight through both with a pair of clippers unless you like fireworks) but fitting them is much more difficult.
Put simply, if you sell them with ANY type of connector on, you'll please somebody and you'll sell more. If you sell them without any connectors, you'll sell a lot less.