Is it a good idea to have a GUI that dosen't let you play until your character loads?

Im planning on having a GUI where if their character hasn't loaded but they pressed play it won't let them in. Meaning the GUI will cover their entire screen

I will fire a remote event to check if their character has loaded and when it has loaded I let them in the game. and delete the GUI

Now is this a good idea?

The reason I need this is because I need their character to be loaded by the time the game starts.

So Basically if their character does not load I treat them like they don't exist