I wish there was a way to know if the developers saw these threads. I posted a duplicate in the "Baldur's Gate III - Mega-threads and Guides" post. I wasn't sure the right place to post this so it would be seen.
I kind of wished the same, and at the same time it's impossible. Larian cannot mark "read" on each thread (even on just the first post of each thread). Because if they started doing that and missed a single thread, people would complain. If they automatically marked everything as read, it would be un-sincere. So they might as well not flag anything as read. Not to mention, many people would interpret "read" as "accepted".
I feel there are two extremes that have a better chance of being read, passed on, discussed internally and processed (as requested or not, the important part is that the feedback gets processed).
1) A big feedback report. Something easy enough to exploit. Then hopefully whoever is monitoring the forums each day (I assume somebody does) will copy the report and look at it offline.
2) A single-topic thread that is all in the title and generates a lot of discussion. Then the thread will spend more time at the top, and thus will be seen.
I personally prefer the first approach. Also, once I'm done compiling my feedback, I can unload it and be done with EA.
