As a matter of fact i think Ts should be able to buy scouts and maybe 1 or max 2 AWPs. However, the CT team should be worked on. As CT is more of a rush and rescue objective team, they should not be allowed a leisure of sniper rifles - maybe a few scouts; i dont even know if we should make AWPs available for CTs - 1 max.
That leads to T's camping like assholes and sniping all the time... that will drain the server faster than a wet fart.
If you aim for realism and objectivity, like hostage rescuing and the like, then by all means allow snipers, flashes, camping etc.
But if you want the servers to be full of dedicated people, create a unique atmosphere where people with similar interests (no snipers, no flashes, no camping) can play a similar game. If you choose this option, then advertise the f*ck out of it. When boss is down, I filter by office, then look for "NO SNIPERS / NO FLASHES", best servers out there.