Personally, even though I am a dumb 15 year old kid who knows nothing, I see a lot of potential in Simon and Richter because of their projectile game, especially the cross. If it functions the same way as Castlevania (Yes, I have played Dracula x and super castlevania 4 b4 even though im 15.), the cross will be constantly moving hit box that goes across the entire stage with consistent knockback if it hits. I can see many setups and uses for this move alone. For example, if lets say he throws the cross away from the stage at the height of being in between platforms, it restricts the opponents from engaging him by rushing, which forces them to either jump over it to engage, block it or dodge it, or throw a projectile that has higher priority over the cross(Which we have not seen any). This is important as Simon is a camp/setup character with some solid combos. What I can think of after seeing the footage, is that if he can get out of the end lag of his overall moves fast enough, he can setup some cool stuff up like throwing an opponent into the cross which knocks them above and towards Simon, then shorthop holy water them to make them stay in the air, following it up with an uptilt, at higher percents, upsmash, axe throw, bair, fair, or even grab if holy water functions the same way as pk fire for ness, hitting them with constant hit boxes while coming to the ground, which can lead to true grab combos we don't know about yet. and these are just combos that can happen from the cross alone. other combo starters may be first hit of down tilt into cross to the above mentioned combo or upsmash directly after getting hit by the cross at higher percents.(Simon has plenty of frames to recover after the down tilt before the upsmash.)(Also upsmash range is broken). Besides combo game, I had this idea of using holy water as a way to return to the stage(When he throws it is sent at a 30 to 45 degree angle below him from his waist, which prevents opponents to attack Simon with aerials or close-up moves at least once before activating and could also probably eat projectiles while its active)This is very scary and could give him enough utility to be competitively viable even without the range on his normal and neutrals. But he has those because he is a Belmont and range is one of their iconic properties. Of course all this is just speculation.
TL;DR Also I forgot to mention this before, but I think we should not look at his projectiles as projectiles, but as assists like in DBFZ. Also Richter may have a better jump than Simon cus he's more acrobatic.