Hi unassumingwolf
I wanted to answer earlier but couldn't because I was at work. So here goes.
1) If trans women no longer identify as a man isn't that a powerful message for feminism (they have essentially have essentially relinquished their patriarchal power and privilege) ?
No. Witness the way some males who identify as female have behaved - presuming to speak for women, tell women what they're allowed to think, taking women's allocated places in politics and sport etc. Now think of how many transmen there are bullying and usurping men. You'll find that TIFs are far less prominent than TIMs. The patriarchy is still very much at play.
2) As feminism is about equality - does reinforcing gender stereotypes about men and women act to our detriment? The gender system oppresses us all?
Trans ideology is all about reinforcing gender stereotypes.
TRAs argue that 'woman' has historically been defined by a combination of biological and social elements. That is true to a point. But if a male is viewed as a woman, that can only be the 'social' definition of a woman, not the biological one. That means it's bolstering certain social stereotypes about what a woman is - reinforcing gender.
3) As feminists are a group in society that have to fight for their voices to be heard, do we not share a common cause with transwomen in representing their rights?
Most rights women are fighting for are ultimately rooted in biology, e.g. access to abortion, maternity leave, freedom from FGM, sexual exploitation etc. In some cases TRA demands conflict with women's right to safety, privacy, and representation.
4) If there is an issue with trans women taking the spaces of cis women in women only panels or something, could we not make them proportionately representative of the population? For example on a panel of 10 women, having one spot for a transwoman and 9 for women. would this make things better?
I suspect people with genuine sexual dysphoria are far rarer than that. The trans 'umbrella' has been extended to cover transvestites, fetishists and other kinds of gender non-conformity. No, I wouldn't be happy with AGPs making up 10% of the places allocated for women. They are not women.
The idea behind women's panels, short lists etc is to overcome a lifetime of discrimination. So imagine if a very highly paid CEO who transitioned in his forties (naming no names) took one of those slots? Would that be fair?