I'll just say it: My moderately-experienced opinion believes that this is the strongest corp card in System Gateway, and I don't care about you randos championing Spinny. It does something that very operations do. It's a design space that is equally exciting as it is dangerous, with how quickly Nisei had to hit the PD rush deck that was terrorizing standard. I think we all knew that this card was strong going into release day, but we still underestimated it.
Extra "clicks" are difficult to come by for the corp, and difficult to find cheaply. When they are cheap, it's expensive or interactive. Shipment from Tennin is an amazingly strong card that now finds itself in Nisei jail, and it could be turned off by the runner for most of the game. Jeeves has good numbers as well, but must be preinstalled, has a strict requirement to fire, and can be trashed.
Enter Seamless Launch. Ignoring combos, Seamless Launch is basically the cheapest way to get extra "clicks" ever. As an operation, it cannot be trashed without some kind of tool. Seamless Launch itself cannot be turned off. The way to take away the card's power is to run whatever it's intended for, immediately. This is surprisingly difficult, because any card installed in a remote can be a target.
Basically, the weakness of the card is that it cannot fast advance, so it requires you to build a remote. However, you want to do this anyway. It enables ease of scoring 4, even 5 advancement agendas, and it does so economically positively! You get two advancement tokens for the price of one, and worst case, the extra click you get off Seamless can be used to play an econ operation if you decide to score a 3 advancement agenda.
This card is one of a kind in standard, and naturally in startup as well. With a single card, you get extra clicks while going economically positive. The only card I can think of that can do the same thing is Fast Break, and it goes credit neutral a lot of the time, while being unplayable for a lot of the game.
Without requiring another card to survive in a remote, and allowing you to score basically any agenda you want at low opportunity and credit cost, it does something many runners are just not equipped to handle. This is not to say that the card should be played as universally as Spinny. Some scoring plans just don't need or want it. But if you can make it work, Spinny and Seamless should absolutely make influence 1-9.