The focus seems to be on getting as many users as virtually possible, meanwhile, Trading212 have closed their doors to focus on their current users whilst adding more useful features and thousands of stocks.
What is stopping FT from adding more stocks regularly?
I think to be fair they are doing both things 
Last week they added 70 stocks for example and the people doing the recruiting probably don’t get involved in stocks so they are not an either/or situation.
They do!
The users add themselves by the way 
There are all sorts of regulations to comply with. Is the stock ISA eligible? What about SIPP? Is it traded frequently enough that orders will be executed?
There’s more to it than just entering the ticker into a database and pushing a button.
I’m sure if they added some stocks the forum would be flooded with ‘Why can’t I buy / sell X?’ posts due to low liquidity.
Quietly in the background they’re prepping to add thousands of European stocks. These won’t be added at a pace of 100 per week, but in much larger batches 
What new features have they added since they closed their doors? Just out of interest.
A waiting list for new clients 
!
An FX charge
Linked pies, and over 2000 new stocks with the aim to make it to 10,000 stocks.
Unfortunately, Freetrade’s partner Drivewealth have some quite stringent criteria when it comes to adding stocks:
Viktor’s publicly stated he wants every single world stock on eventually. We might be waiting several years but at least that’s the goal.
Sorry you said ‘features’, linked pies are cool and I use them, but what else?
I think they been adding stocks on weekly basis at least. I would suggest everyone to use their voting power for the stocks you want to add to freetrade