Thank you for your feedback:
open app, it directly links to subscribed, instead of local
This is supported but the feature appears to be bugged. I'll fix this for the next release. Normally you can select a page and set it as home. However for subscribed this doesn't work for some reason.
mark posts that I scrolled over as “read” meaning that they won’t appear on pc
I didn't know this existed but I will add this to the roadmap. I don't think this is critical so it will be after the core features are implemented.
wordfilter blocklist
These might actually be important enough to be core. I'll add these to the roadmap as well.