[Specializations]
When Uprising 1.0 launched, I made this thread, basically the point was this:
The logistics and now the commando dropsuit are the only examples of specialization done right as of now. The logistics is very different from the basic mediums; giving up one thing to be very good at (or "specialize") something else. Likewise, the commando heavy specialization sacrifices HP and and the heavy weapon slot in exchange for 2 light weapons.

The majority of what we have right now however are not real specializations, but mild tweaks. From medium to assault, from light to scout, and from heavy to sentinel there is barely any change. This is very bad in my opinion.

[Basic frames]
Basic frames are suits with no reason to use them, we should NOT have useless suits with no purpose, especially since it can't be used to save money (seriously, why are they more expensive?). Not only are basic frames bonus-less (thus inferior) versions of specialized suits, but also more expensive. There should be situations where you would actually want to use them, both ISK-wise, and gameplay reasons.

They need a price cut, they should be at least 10% cheaper than their specialized counterpart, they should be the cheaper alternative to specialize suits.

They should be very generalized and versatile in slot layouts compared to their specialist counterparts, like a middle ground between the specializations of the suits; this could be done by altering the basic frames (like medium basics get a 2nd equipment slot and lose a module slot), or by altering the specialist suits (like taking equipment slot from assaults, and grenade slot from logi, so basic will be a middle ground with both).

[Solutions]: these are just examples of how I would solve the issues of price and slot layout.
PRICE: basic frame price = specialization price - 10%

LIGHT (reasoning can be found here)
Basic: + 1 high or low slot (& PG/CPU to fit it, they need a buff anyway)
Scout: + 1 equipment slot (& PG/CPU to fit it, they also need a buff)
Pilot: ? (not here yet, so can't say)

MEDIUM
Basic frame: + 1 equipment (2 equipment total, between assault and logi)
Logi: - grenade (they already have an extra low slot & lots of equipment compared to assaults, offensive abilities like grenades shouldn't be emphasized)
Assault: + 1 high slot (logis get an extra low slot compared to assaults anyway)

HEAVY
Basic: -sidearm, + 1 equipment (middle-ground between commando and sentinel)
Sentinel: same
Commando: same

Related dropsuit threads: tiercide | specialization bonuses

i think there more expensive due to the fact they take less sp to obtain..

by that logic?

what i meant was. is that it takes less sp to unlock the basic suits than it does assault suits of the same type.

im not talking about the suit levels.

by the time u get ur hands on a proto assault suit u could own a regular proto basic frame.with less sp investment

The assault drophip vs regular dropship examples apply still. They are both the same tier, yet one requires greater SP investment.
The basic frame suit is inferior because it lacks a bonus, so while it takes less SP, it should not cost more. The way things are right now, basic frames have no reason to be used, everyone just goes straight for the specializations; what's the point if they can't even save you money? Only an idiot would get prototype basic frames simply because it costs less SP.