Hi
A 2.000 pts ARABY army list could look like this.
1 General
2 Heroes
1 Wizzard + Djinn
1 Wizzard
6 Units Spearmen
5 Units Archers
6 Units Knights
2 Units Desert Riders
2 Units Flying Carpets
Breakpoint 11 army
Tactics.
Make it difficult for your opponent to give succesfully commands meaning to casts the 4+ Mirage spell and the 4+ Sandstorm spell.
Shoot at hem from long range.
With your Cavalry (Knights) you can charge any opponent in the front ...you only need to win by 1 ....because you put 1 unit flying carpets in his back

Or you charge with Knights in the front and use the Desert riders to charge the edge of same unit.
At important charges you also have the option to cast "Curse of the Djinn" once with 6+ and once with 5+ as you have a Djinn which causes in additional terror.
Alternatively you can goe the more Magic way....use 1 unit Spearmen less allowing to used the "Ring of Magic" and to use "Wand of Power" allowing to cast your spells at higher succes rate.
Alternatively you can also go the way of skipping 2 units of Knights and 1 unit of desert Rider and take instead 3 units of "Camle Riders"
The Camel Rider don´t get any penalty for bein aout of 20cm command range but you allways can command with -1 meaning that a command value of 9 will need an 8 to be succesfull. This can be and advantage as well as a disadvantage. It can midlead you to situations where 3 units with point value 300 are opperating far away from your central army keeping them highly vulnerable for charges and countercharges.
Elephants and Sultans Guard I don´t recommend to use as you have cheaper units that keep your brekpoint high and giving you more tactical flexibility but nevertheless I own them also and use them in games with 2500 points and more.
Magic Carpets are the most flexible unit for this army and I never leave house without 2 of them as the cna do 6 shooting attacks at 15cm rang (you easily kill war engines with them) you can use them to charge Cavalry or chariot units in the edge (you have pretty good chance to kill this units ...but don´t do this with Chaos knights) and you can use them to put it in the back of your oponent unit being charged by you.
....these are only a few possibilities and variants how to play them and you can be assured that there are a lot of other variants how you could set up and ARABY army.
If you can come to Karlsruhe this comming wekend you could see how the ply as I will field a 2.000 pts ARABY army on the battlefiel od honor.
Cheers
Claus