A couple of interesting "behind the scenes" tidbits from MLS. First, no surprise if you follow MLS expansion news, MLS is scouting out possible sites for a St. Louis expansion stadium:
St. Louis Stadium Search
The next bit is that the player's union published the full 2015-2020 MLS CBA. Much of this was already known, but the interesting bit are some of the bonus details. Grant Wahl at SI has the details in an easier to read form, though he doesn't explain in the article that the team and tournament bonuses listed are for the team to pay their players for making the tournament or whatnot.
MLS CBA Summary
To me, the most important details are not the bonuses, but the allocation money. First, the big one is that MLS only gives $650,000 maximum allocation cash to teams for a transfer, so if the transfer fee is $3 million...well you get $650,000. In a certain sense, this encourages teams to not sell their big names for big cash, though of course $650,000 buys you a lot of player power in MLS, that's 2.5 Jordan Morrises or 3 Gyasi Zardes.
The other thing is the allocation money for missing the playoffs: $250,000, and I think that's a problem; why? Because it makes tanking more viable. MLS teams are automatically in the Open Cup or Canadian Cup, depending on their country, so that's $200,000 right off the bat, missing the playoffs is $250,000, but there's no allocation incentive for winning MLS Cup or doing well in the playoffs; doing well enough to make the CCL only gets you an extra $200,000. The only way to top the $450,000 total allocation cash for doing poorly in MLS is to win it all and join the International Club Cup in addition to the CCL for a total of $600,00. Admittedly, this isn't as bad as basketball where tanking is endemic, but certainly there's some incentives to miss the playoffs completely if you aren't good enough to go far.
Lastly, there's talk of a US-Mexico champions cup in the CBA, a potential glimpse of things to come. There aren't a lot of details, but I'm guessing it's maybe the eastern and western conference winners vs the top to Liga MX teams, or maybe top 4 from both.