the beta is misleading. got half total power levels and thus ~half total abilities available. at the moment there is relative few class customization opportunities for a single-class character, but those options is gonna increase. sure, multi-class will also have more options, but there is gonna be a kinda floating point where many single classes become increasing competitive, and if poe is like any other game with levels, am suspecting particular for dedicated casters, the point o' competitiveness will come later rather than earlier.
the beta format also camouflages early game awkwardness for many multiclasses. sure, is more than a few current power builds being touted as soopergrooveykewl, but those builds typical ain't impressive 'til level _____ and level _____ is rare 1-5. need combine x abilities from class 1 with y abilities from class 2 for the multiclass to outshine singles. those abilities ain't always available at level 1.
am also gonna observe how current, even with the awkward betaness people misbelieve is indicative o' the game as whole, am personal keeping our created joinable npc casters vanilla, and am also likely to do so with paladins in spite o' paladin uberness when multiclassing. the next level powers is often too good to forgo entirely. sure, our main character might be a priest/monk or priest/paladin o' some flavor, but if am doing so, then chances are am gonna also want a pure priest in our party as well. the next power level is indeed a big advantage for single classes.
also, as is so often the case, the obvious solution is unpalatable. a few multiclass combos is indeed disproportionate powerful, but nerf the particular powerful multis a bit makes more sense than attempting to increase single efficacy. increase efficacy o' singles is only gonna lead to new and unexpected multiclass problems. one o' the reasons why universal talents + multiclass is such a horrible idea is 'cause o' the balancing problems which will inevitable ensue. however, powerup the single classes is the exact same kinda stoopid. where a handful o' powerful multis is tainting the well, it makes far more sense to fix the mechanics which is making the mutis so powerful. the singles ain't performing poorly in the beta, regardless o' what a few folks would have you believe. can make an entire party o' single class characters and roll-stomp your way through the beta. however, relative to a few o' the mutis, the singles cannot keep pace. so fix the limited mechanics issues which is busting the multis is the reasonable solution.
also, keep in mind many/most beta folks is not casual poe players. had to pay extra to beta. beta testers is hardcore poe fans. when it comes to breaking the game, hardcore folks is ideal. with more than a few such folks having already invested hundreds o' hours in the beta, they is finding exploits and bugs which even the developers and the qa testers ain't gonna see. is a great resource for obsidian to get so many additional testing resources who is paying for the opportunity to do so. 'course the hardcore folks is not gonna be the average user. the hardcore folks play the game at the margins compared to ordinary purchasers. what a beta user sees as some kinda vast gulf 'tween single and multi-class efficacy could go complete unnoticed by a more casual player. the single class is able to do 3.1 dps with a _____, while a mc does 3.5. such distinctions is frequent important to beta folks, but for most players it means battles may be a couple seconds longer for a party composed o' single classes v. one built 'round multis. so what?
the problem ain't the problem many is suggesting it to be.
HA! Good Fun!