Since stocks are pretty slow and is one of the only methods of acquiring money without too much activity and player to player interaction (because of the NPC). I propose that there should be some sort of cryptocurrency implemented. You can call it ChedCoin if you want :P I would also like a total revamp on the electronics, there should be different companies with different products with different specs. Desktops should be fully customizable as in real life. Mining rigs could be built to complement the cryptocurrency.
How this will work:
There will be a few different coins with their own benefits, one can have support for all travel countries while another can be cheap and easy to mine. Variety + Player Choice = Fun
Computers can follow the same formula, different hardware to mine different coins. It can also be a lot like racing, having a fun past time and upgrading your stuff.
The reasons for why this might be a good idea:
Adds more depth to game, players will have more to invest in and experiment with
Adds a greater sense of realism
Players will have more options of creating money instead of running, trading, stocks, and companies (which all require either heavy activity, immense amounts of money, or both)
It can compliment almost every other aspect of the game (companies, hacking, trading, and even stocks (individual computer companies [not player made companies, the ones mentioned earlier] can have their own stocks, etc)
Adds an alternative money system for players which can be converted to TCD and vice versa at the players discretion. TCD is vulnerable to mugs but is safer as the value stays the same. ChedCoin is protected by cryptography but prices can fluctuate (like real life bitcoin)
Adds a new market that players have full control of.
I know this is not completely refined but its just a basic idea, what do you guys think?
Oh and may the blockchain prevail!