I don't see less bosses than last boss event. I need to refresh game to see bosses as often as before. Or rather there is enough of them if you refresh game to always use your RP on 80/90 level special ones.
Everything in phase 2 will cost 34,5k starts. 5k of this are gifts. Saying you want everything part gifts as gifts will be a bonus if you have left overs, when you barely finished phase 1 is kinda well "GL to you sir, you will need it" kind of deal.
There will be better bosses in phase 2 dropping more starts per kill/spawn, but if they will have as much hp as red ones had last event, then I hope people learned and wont poke them with a single 2* level 1 girl cause that fucking doesn't help and actually lot of those bosses escaped to the point I stopped spawning them and attacking at least till I saw they would surely die.
As for my personal progress in this event: phase 1 shop is clear, 10k5 starts accumulated for sake of phase 2, and 250 bells to spawn better 20 bells bosses in phase 2.
My strategy is kinda selfish for phase 1. I don't spawn bosses with bells. Used stamina to finish reissue (do phase 2 maps and get everything from shop), and use it to do the nation fights as I didn't touch them yet. Else I run 40 stamina event map to get bells and LCs. I use all my RBs on 80/90 level special bosses others spawn, and if I spawn normal boss with that 40 stamina map, then I just share it not poking it myself - I get around 20 stars from that (finder reward) which just adds to the avg I get from 80/90 bosses I spent RBs on.
Thou on phase 2 all the bells will go towards spawning better special boss. If they will give as much stars as they were giving stuff in previous RB event (and same amounts dropped for normal/yellow special bosses now vs previous event suggest it), then it will be 292 stars for 80 level one and 320 for 90 level (or 175/192 for people who didn't spawn them but participated) - so with average of 310 starts per boss I have close to 4k "stored" in bells so nearly half of what I need to clear phase 2 shop .