Strike missions - Raid comparison is nonsense. They offer nothing for upcoming raiders since they will still end up unexperienced , undergeared and lacking of killproof. People need a reason to do things other than just the fun that will last 10 wipes on vg. Raids arent empty cause of the lack of new people, the real issue with RAIDS is that , you get to make 3 legendary armors (that for me at least are harder to craft than to get the collection done in raids), get some skins (most people will just ignore them). There is a huge lack of rewards there. Noone wants to repeat content over time and end up with some gold and grind that LI. Most raiders will just stop very quickly. Adding appealing rewards like mounts (-remember Warclaw that filled WvW with people?) , mountskins or unique skins for that matter, new collections, maybe new Challenge Modes (or setting the difficulty scale - makes more sense than strike missions), or maybe add guildquests for raids and new rewards for the whole guild, for me at least would be the reason for a comeback.