3. It's always good to have custom PU's because if you put in a lot of bricks (especially 3 hitters) then it's no guarantee that the player will get a good/decent PU and can make the gameplay poor therefore the ranking will be poor as well.
I think there is a post in the general forum area that has the complete list of guidelines that will help you make a good set. But like I said you need any help just PM me.
Thanks for offering your help, Tickle.
By your third point, I take it you mean "forced" PU's? I hate levels which just have random PU's so you can be sure mine will have the PU's needed to complete them in a timely manner! By "custom" PU's I mean those like Blake and Black Bullet use in their sets. I'm currently working on a "Rail Blossom" PU - it will work like the Death Blossom but with Rail Bricks! Should be very
powerful (and noisy)! But if it clears too much of a level at once, I may make it one-shot per pickup. I'm aware of all the guidelines and I'm not the most skilled player, so if it's easy for me it should be easy for the vast majority of players!