Little Prompt

Unless you are constantly eyeing your power level, you may not notice when you are at transformation PL. So my suggestion is that once hit the required strength, there is a little prompt, whether it may be a small letter T in the corner of the screen or a ding sound, or even a voice clip. As long as it is subtle yet noticeable enough that one would recognize it.

you dont look at the PL you look at the CF bar
but would be cool if the char said something like "Get ready to fight a real SSJ" - Trunks