Po Chin (2000) does look a bit abnormal, but in the end, he looks alright to me.
Here is a photo of him:
He is rather short and stocky, and seems to have a large head, but all Elephants in different in some way. I think the looks descend from Chieng Mei, Po’s grandfather who was rather short and stocky himself (judging from photos).
Can’t Chamundi (1992) breed at Pairi Daiza? He produced an unsuccessful calf in 2016 with Aye Chan May, so he’s shown he is capable of breeding. He is also genetically valuable, with only three living relatives.
Also re. Po Chin being not particularly genetically valuable, I would 100% agree with you.
Chieng Mei + Ida’s living descendants:
First Generation:
0.1 Irma (1970) at Rotterdam Zoo
0.1 Schottzie (1975) at Cincinnati Zoo
1.0
Gandhi (2006) at La Palmyre Zoo
1.0 Plai Sak (2017) at Copenhagen Zoo
Second Generation:
0.1 Bernhardine (1984) at Dublin Zoo
0.1 Yasmin (1990) at Dublin Zoo
0.1 Tara (1998) at Blackpool Zoo
0.1 Karishma (1998) at Whipsnade Zoo
1.0
Po Chin (2000) at Pairi Daiza Zoo
1.0 Assam (2000) at Budapest Zoo
0.1 Bangka (2000) at Rotterdam Zoo
1.0 Sibu (2004) at Eindhoven Zoo
1.0 Tom (2014) at Le Pal Zoo
0.1 Suki (2017) at Planckendael Zoo
0.1 Tun Kai (2017) at Planckendael Zoo
0.1 Mun (2020) at Copenhagen Zoo
Third Generation:
0.1 Anak (2003) at Dublin Zoo
0.1 Sundara (2004) at Chester Zoo
0.1 Asha (2007) at Dublin Zoo
1.0 Billy (2008) at Denver Zoo
0.1 Faya (2010) at Rotterdam Zoo
1.0 George (Ned) (2010) at Katowice Zoo
0.1 Kalaya (2013) at Knies Kinderzoo
1.0 Kavi (2014) at Dublin Zoo
0.1 Samiya (2014) at Dublin Zoo
1.0 Sunay (2015) at La Tanière Zoo
0.1 Elizabeth (2016) at Whipsnade Zoo
1.0 Kabir (2017) at Dublin Zoo
1.0 Avani (2017) at Dublin Zoo
1.0 Ta Wan (2017) at Pairi Daiza
1.0 Arun (2017) at Budapest Zoo
0.1 Jing (2018) at Eindhoven Zoo
0.1 Malee (2019) at Pairi Daiza
0.1 Luna (2019) at Pairi Daiza
Fourth Generation:
1.0 Ashoka (2014) at Dublin Zoo
0.1 Zinda (2016) at Dublin Zoo
0.1 Indali (2016) at Chester Zoo
1.0 Sanjay (2018) at Dublin Zoo
0.1 Riva (2020) at Chester Zoo
As you can see, there are a lot of females born in this line.