Can you consider listing some UK preference shares, such as NWBD, LLPC, SANB etc.
If you wish to request preference shares for any company, please make a request post for each stock. Individually. This may seem annoying, but the voting process helps staff prioritise. If you’re going to put multiple stocks in one post, it may as well be all stocks, because a vote on a multi request post doesn’t necessarily reflect a deep desire to have all of those instruments available.
Alternatively, I suggest using the form link to from the pinned thread. It’s the fastest way and helps the team keep track of requests centrally.