It can result in poor quality and noticeable differences compared to a genuine card
This creature can basically block as many creatures as it wants (big up the flavor)
If Custodi Squire is not on the battlefield when its ability resolves, the vote will still take place and the card(s) that had the most votes will still be returned to your hand
Drafts will quickly become stale, as players will learn and draft all existing archetypes, seeing little variety between successive drafts
But, as a 4/4, it isn't likely do die, and you get a free token just for casting it, so at least it can pay for itself
For one, being puts it in a strange (though unique) color combination for dragons, one that misses a lot of the typical dragon support