The point is KB, if you tell people that what you are trying to do, the community will definitely support it.
Well, I don't want to make promises I can't keep, so until I've done some experimenting with the developer certificate, I wasn't going to say much.
The day will come (hopefully in our phone's lifetime) when the LCDUI fix is released, people start downloading MIDlets, and find out that they can't run them due to the "909" error because they used protected APIs. Hopefully by then I'll know enough to be sure what I can and can't fix.
We're not exactly on topic either

At some point I'll make a new post either here or in third-party apps discussing what can and can't be done without signing.
As far as "unlocking", maybe that was a bad choice of words, but if you search for _policy.txt, you will find info on how to let "any" app run. That could be a dangerous thing to do, and Sprint could disable it at any time.