Quite simply, getting new Welsh learners will be key. There needs to be a way for people to learn quick outside of working hours. I was actually thinking about this the other night. Fluent speakers too need to pull up their socks in this and get involved. But first they need the skills. Whilst SSIW is amazing, many people still go to courses or would like to, but have difficulty in accessing them.
-A Welsh teacher could train 10 or so fluent speakers how to teach Welsh.
-These trainers than can then start advertising courses in their village/neighbourhood etc. Leaflets/posters can be left on shop counters, pubs, church, notice boards at leisure centres, supermarkets. etc etc
-Courses need to be cheap and deliver excellent bang for buck. If teachers are good then by word of mouth more people will come and make it worthwhile. Most people can generally do 7-9. I've had to quit my course Uwch as I can't make it for 6pm...
Learners want to be able to practise Welsh. This may sound a bit controversial but there need to be events where non speakers feel as though they are missing out.
-Neighbourhood events such as BBQ, Fete's, sports, arts and crafts, theatre, panto, whatever should be advertised. The advert should be bilingual as you want to draw in everyone but don't want to exclude children- they shouldn't have to miss out for something they haven't had a chance to change). BUT, it should state that the medium of the event will be in Welsh. I can remember seeing like this in Pontcanna when I just started learning. The leaflet was only in Welsh, so non speakers wouldn't attend.
-Once there, everything should be in Welsh, and Welsh courses could be advertised, it's a bit of Trojan Horse approach. One event a month should be a constant reminder that there exists a community which they could be part of.
When I came to Cardiff, it was tough to 'find Welsh things'. This needs to change.
It's going to require time and effort from people learning and from some dedicated speakers.