I'm not sure if this is the correct place for this observation, or if it can even be resolved. When casting the spell chaos bolt, there are a couple of issues. First, it allows u to choose the slot level u intend to use AFTER casting the spell. So if the spell hits with the attack roll, then u can be like, yup I cast it at 7th level. Vice versa if u find out the attack roll doesn't beat the targets AC, u can then declare that u intended to cast it at 1st level (not wasting a higher level slot). The second issue is a consequence of the first issue. If u never hit with the spell, u need to manually remove your spell slots, because not getting to roll damage leads to the slots not being removed automatically. Not a big issue IF u remember to do it and play with those that are less likely to milk this oversight.
