Oh, adding teams will mess with the balance alright. The balance sheet. You can trust that the current owners have very little desire to slice the revenue pie any more than they have to. The ONLY reason they would even discuss expansion is if they were convinced that adding teams would create a disproportionate growth in the overall fan base and by extension, an even better revenue figure. This is why they're so interested in places like London, completely untapped market. By adding a single team there, they believe they can capture a significant percentage of the 63 million people that currently live in the UK. That's a far greater return on their investment than expansion into any U.S. city, including Los Angeles, would offer.
I think you're confusing some things.
I'm not suggesting a LA expansion team, rather the Raiders moving to LA and I could see the Jaguars moving to London. I could also see the Bills eventually moving to Toronto.
As for creating new teams domestically... I would say that Vegas is a prime market that could fill a stadium week in and week out.
There would be potential for a San Antonio team, but I think it would be a mistake.
I do think any expansion would come from Europe, and it would extend from a team having success in London. I don't see the Jaguars being any less successful there.
I think what you'll see is that NFL will try to slowly but surely expand the number of games in London a year, which will test the annual viability of having 8 home games in London. Having a steady team there will obviously help with consistency though.
They had 1 a year dating back to 2007. They had 2 last year, and this year they're going to have 3.
The Jaguars are the obvious candidate, but the fact that they're so bad doesn't really help in terms of making the game exciting there. So far the blowouts don't seem to be impacting attendance.
You have 10x the number of people in London than you do in Jacksonville... It's a huge market and a huge opportunity. I'm surprised they haven't moved already.