Yes, the design and some of the functionalities. mastodon base design is very flat and does not look very modern. also i need the likes and other reactions, i need the groups.

Yes, and i see a big opportunity for the next 5 years at least in my opinion. the freedom of speech must be guaranteed always, and this is what people need especially the traditional social media services like Facebook and twitter are going offensive on freedom of speech and filtering the content for political and commercial purposes.