Ellis selected a 34-player squad as she begins to prepare for the upcoming COSAFA Cup tournament, set to take place in September this year.
The former Banyana captain was positive when speaking about what the future holds for the women's senior national team.
"I think it is limitless because from what I have seen this week the players are all raising their hands," she told SAFA.
The challenge comes in trying to whittle down the squad to a group of 23.
"When you are looking into the group of 34 and thinking how do we select the 23 that is needed for the COSAFA CUP, it is a terrible headache," she said.
"You put down names on a paper and move them around and you realise how much talent there is available to us, but that is the challenge you want – if you leave someone out it is not because they are not a good player it is just that the other one is better after you have worked around scenarios, and what-ifs.
"That is why you would select player A ahead of player B. We interacted with their coaches when we gave the players training programmes because at the end fo the day it is not only going to benefit us but all clubs."