i'd like to say i don't hate the idea of multiclassing in principle but i hate the way it's designed, however if it was implemented in the way i'd like i do wonder if people would still call it multiclassing? something akin to 4e's multiclass feats crossed with subclasses and eldritch...
ehhhh, can't really agree with you on that one, i think they're a good idea, i think it's a bigger mistake that Wizards stuck so rigidly to the one action, one move and one bonus action structure for all classes and never experimented with giving different classes different amounts of uses for...
even so, this spell is kind of underwhelming IMO, i might actually consider using it if the fire damage from each shot was persistent and had to be extinguished like alchemist's fire.
personally i think i fall more on the side of a different power/casting mechanic mattering more to the psion than the spells themselves, ultimately there's only so many distinct effects supernatural powers will produce so i think making the playfeel of the psion feel distinct to regular casting...
by spellcaster psion i think they pretty much just mean a 'psion' who's mechanics are just those of a regular caster's with a themed list, maybe with some tweaked mechanics for them like metamagic.
like how some people consider aberrant mind sorcerer enough to count as a 'psion'.
PCs are special, but not that special IMO, they're no more special than athletes or actors are in our world, so a cut above the masses perhaps but not enough to qualify as a whole different category of being, and certainly not the only ones around.
the time pressure is all the loot, EXP and rewards getting taken by the other adventuring group who was hired by the client because they actually get up off their arses and can complete the three day job in less than a fortnight.
they shouldn't want to end up in the water but i think making it a slightly more accessible territory is still a good decision, it gives them options, both in battle and out, it lets them be more down for all those things they might decide to not do because 'aw hell i don't wanna risk ending up...
I don’t think i have much to add beyond don’t make interacting with the water a pain, your players are likely going to end up in the drink at some point or another so it might pay to be a little generous and just say everyone gets a swim speed equal to half walkspeed, perhaps also something like...
my only real exposure to 4e is here on Enworld, and honestly it sounds pretty great all around apart from a personal bugbear against tactical combat/abilities that i just struggle with.
didn't (most methods of) healing in 4e burn your healing surges to function? so while most encounters are self contained ultimately they ARE grinding down your resources, as well as any dailies you burn.
i wouldn't ban it wholesale personally, but i'd remove the fact it keeps enemies and attacks out as a base feature and let it be an additional bonus if you upcast it to 5th level, otherwise it just serves as climate controlled bubble to protect from the weather and suchlike,
8 hours short rests make sense given it's your overnight sleep but do long rests honestly need to be a whole week to serve their function in the recovery schedule? i feel like you could make them 48 hours and that'd serve as enough as a narrative speedbump to function just as well as weeklong rests.