When it comes to the character of the “Fire Witch” Amy, these are my favourite seasons of Buffy the Vampire Slayer:
For me, the character of Amy was something of an “Unlucky Witch“. Whilst she initially showed much potential for witchcraft, her abilities were soon surpassed (by that of Willows). She also never appeared to have that many friends (at least when compared to the closeness of the “Scoobie Gang”). I also feel that Amy was something of an “Undeveloped Character”. Whilst she spent much of her time as a rat, it would have been interesting to have seen her character develop along a similar path to that of Willows (i.e. becoming more powerful). But instead of “putting the work in”, she decided to go down the paths of both jealousness and envy. If Amy had walked a different path, then perhaps she could have taken the place of Tara (in later seasons).