I currently am in the same state of mind as last January. BTC went up and then straight down. I have learn my lesson, next November / December I'll probably sell a few to take profit.
Plus, I am trying to be realistic here :
-There was an unprecedented bullrun to 20k. Odds are veeeery very thin that, in the life of btc, we don't see another similar bullrun again.
-Goldman Sachs exchange !
-Lightning network (dunno really if this will help btc to recover, but hey, still looks bullish to me)
-Maybe some future nice fork annoucements ?
-No more weak hands since the 'crash'
I am hodling at least until mid summer of this year. And if the price stays down, then that would mean to me that I definitely missed the big opportunity at the 20K USD ATH.
HODL
Holding right now is almost definitely the right strategy, you'll find few who disagree with you on that. Lightning network will probably actually be the biggest of the things you mentioned. Getting fees back down to a sensible amount can be huge for bitcoin as it gives it a use case again.