1. The opening date at first was 11th of November, indeed, however it has always been written under it that it's a subject to change so therefore I believe they postponed the opening because of some scripting and mapping stuff. To make it better. After all, I believe it's not easy to create and run a samp server, but if you looked into the mapping sneak peak thread, you would've noticed that the mapped objects are really nice so far, so it's worth waiting for it.
2. LSRP is a different community so I'm sure those admins that were admins on LS-RP didn't get their admin position here just because they were admins there. I suppose that they are recognized players on the SAMP scene and are capable of doing their admin duties. It's same like irl, when the ones with more experience have a better chance than those with no experience. But you'll get a chance to prove yourself if you want to become an admin! :) You shouldn't aim for an admin when you don't even seem to know this community to the fullest, judged from your questions.
3. While I'm all for casuality on gaming communities, there's a certain hierarchy as well. Me for example, as a regular member, I have no things to do on this server other than chill on discord, chill on the forums and wait for the server to open then play on it. But Damian for example, I believe he has a lot of scripting/mapping to do. But he is present on discord to moderate the discord together with the rest of the staff team. Reharsher for example, he's active a lot on discord and regularly chats with us all in the general chat. At one point, he even invited us to play a game with him, even though he doesn't know all of us. I've never met the guy for example, yet I could chat with him casually, but also to receive donator related help. Maybe them two were busy when you messaged them, especially if the little circle next to the name is yellow or red. When I'm yellow or red, I don't respond to people neither because I'm not there or doing something else on the PC, so I don't even receive discord notifications, nor do I open them. We all have other things to take care of, no one is getting paid for this and staff team aren't a tech support to sit all day on the discord and reply to people's questions. You could've asked any other member, in the general chat or some other admins.
4. It's not splitting, it's simply like a reward for donating. I doubt anyone has a problem with this, since it's normal to receive something for your money, other than just getting a "thank you" for helping the server with money.
5. I don't know what that samp version is, so I'll refrain from answering to this question.
6. I haven't heard such thing so yeah...but I don't think that this will happen, because why would they bother to map and script a whole new server if their plans were to merge with the RCRP community.
I hope I've helped out. Welcome to the server and enjoy your stay and worry less about such things! :)