Another thing to consider is that poloniex may just be creating a liquid swappable method between tron and steem.
If poloniex has to make sure it's always liquid that means they may never power up the swapped steem and thus have no impact on governance.

This for me is the crux of the matter. If they have no intentions on our governance and are only here to add an awesome service. Then i'm likely to say

"Welcome TRON with open arms"

For me I really want to know what their intentions are on governance.
And I guess what they plan to do for development on the blockchain in the future.