Maybe it's my inability but when I'm not right next to the enemy I have a hard(ish) time hitting them. With some few attacks it's better, of course. Also the ability to increase size doesn't do much - tiny + 25% is still tiny.
(Also I'd like to propose a toggle for autoaiming, don't know if that should go in a seperate thread)
#Attack area feels to small
rough rain
civic hinge
Autoaim has been requested in several other threads, check some accessibility option threads
as to size and low attack range, that feels intentional - as you grow smaller, your fists don't stay the same
There is an evo to help you compensate - directly increasing attack size
rough rain
There is an evo to help you compensate - directly increasing attack size
yeah, that's what I meant. this evofeels meaningless
civic hinge
well, I kind of disagree, it's just a matter of not becoming 100% -> 120%, but 80% -> 100%
You're recovering some attack size, not growing massive attacks while staying tiny
The evo does what it should, especially considering that a small (prey) build will generally want to avoid combat, instead of participating
If you want big attacks, you can do the attack size evo on top of growing in size
that should satisfy your predatory needs 
sterile raft
I agree with Prunebane, but I'll also say that getting more options in the game for ranged attacks (as suggested by @subtle ibex) would also indirectly help.
edgy dove
Tiny size is a straight up debuff.
You don't get faster the smaller you are, but you get less reach even on RANGED attacks. Small size is extremely punishing, cause the less your area is, less mobs you can reach and attack at once - the slower your progression is.
Being big without any evos is superior to be small even with evos that benefit small size
civic hinge
Sorry, but strong disagree on small size being a debuff
Damageless runs thrive with small size, you can dodge so much easier, and sometimes even "hug" bosses and they can't hit you properly
Very playstyle dependent
mild tiger
Being able to hit while tiny is too big a buff. I get a Legendary Reach while 30% size and I'm zooming around and smacking enemies that can't touch me