> better/different open source license
And that's why "open source" is a really bad term that no one should use unironically, unless they want to confuse the hell out of people.
There are protective (copyleft) licenses, and there are permissive licenses - and they're very different beasts. And it's, like, software licensing 101.
> that want to go from LGPL to MIT or something
I find this extremely weird.
In a sane world, picking a copyleft license must mean that you care about user freedoms and want to make sure they're respected no matter what happens. Because that's the whole point of picking a copyleft license - not about letting people peek or tweak some code, not about social brownie points, and most certainly not about marketing campaigns - but about granting users their freedoms.
Either people get confused about "open source" and pick... I don't know, whatever looks cool, without even understanding what they're doing; or they're giving up on their principles when they smell the money.
I can understand wanting to go from, say, GPL to AGPL, or GPLv2 to GPLv3[+] - it would make sense, as it all goes in line of protecting freedoms. But LGPL to MIT is truly a weird one.