My only concern with trading in the near future is the PlusToken scammers. Don't they still have loads of btc/alts that they're randomly going to keep dumping, thus significantly messing with price action?
Possibly. While we don't really know for sure, if ever they still have a good chunk of BTC to dump in the markets, yes it definitely would affect bitcoin's price, but just in the short-mid term. In the end, they will simply just get bought by various people hence effectively distributing out the coins. What matters most is the long-term valuation.