Here is a link where Arthur B. talks about the need for hard forks:
The summary is that new features should be done via on chain governance as they can be contentious and we want to avoid centralization. On chain governance empowers stakeholders to vote on whether they want those changes....
You only need the equivalent of 2 CPU cores to bake/endorse with Tezos, and about 4 GB of RAM. Any more will remain idle. Yes, SSD due to poor database implementation, unfortunately.
You should run this command before starting the baker and endorser: export TEZOS_LOG='* -> debug'
That will give you much more output so you have an idea of what is ...
You would have to split your funds over several accounts. Judging from the documentation of Ledger it should be easy to add new accounts (presumably you can add several accounts that stores Tezos). You then just have to set up staking for each account.
Have a look at this post, it shows how to create multiple originated accounts: How do you create a secondary KT1 contact under your TZ address?
You can also have multiple implicit accounts using the same seed.