Because it is a universal satellite decoder, it is better that you do some research by yourself on the types of satellite decoder models available, instead of just accepting whatever decoder that the installer provide to you. And of course you can't compare with Astro decoders. May you share with us, what decoder brand and model you are using now? And why do you want a smart card slot for? What channels do you want to watch that uses smart card to decrypt the channels?
Well, there is other alternatives to watch channels from multiple satellites besides motorize system because motorize system itself is not cheap (I think it costs thousands of ringgit if not mistaken) and not everyone willing to spend money on that. The easiest one is to buy another satellite dish to receive signals from another satellite, which is easy and straightforward. If you don't want to spend money to buy another dish and other equipment, you can put multiple LNBs on your satellite dish, but this is quite challenging and time consuming to set it up but of course it saves cost, or you can ask an installer to help you. It looks something like this:

Yes, Astro exclusive DTH license expires on Feb 2017, while non-exclusive license expires on 2022. And yes it means companies can introduce new DTH pay TV after Feb 2017. But this is just DTH pay TV company, not TV content. Astro holds quite an amount of exclusive content/channels across several TV networks for several years, such as HBO, Fox Network Group, etc. The future DTH pay TV might struggle if they couldn't offer TV channels that aren't so attractive to customers because Astro still owns those exclusive rights to those "nice" channels. Pretty much almost every channels you saw on Astro that Hypp TV don't provide such as HBO, Discovery Channel, Nat Geo, others are exclusive by Astro. Unless the new DTH pay TV willing to bid over Astro for the content, and not to forget about sports content as well.
It depends whether Astro interested to provide C band DTH or not, since that is one of the easiest solution to solve rain fade issue and all Malaysian customers can enjoy the service, unlike Astro IPTV where it is limited to service coverage as the area must have fibre broadband service to enjoy the service. Yes I am very aware that Astro FB page are full of negative feedback and complaints. You say their sales drop? Nope. The number of subscribers kept increasing non-stop quarter by quarter, year by year and the graph never drop, plus Njoi also provided some support too. Currently there are 5 millions and growing subscribers, including 1 million Njoi customers. Thanks to Astro's monopoly, despite how much effort the customers tries to complain, cancel Astro service and even tells people to boycott Astro, Astro will still continue to stand as "No. 1 pay TV in Malaysia" and win some sort of awards (such as Putra Brand Awards) that we don't care. Because they know that there's no other pay TV in Malaysia provide the channels as good as Astro. Ask yourself, do you prefer the channels you see on Astro or Hypp TV, or both? If you cancel Astro, you can't watch those channels, as simple as that. Even there is those Internet TV, watch TV shows on Internet for free, Netflix, iflix, Hypp TV or whatsoever, Astro aren't afraid about this because as long the number of subscribers is growing and profit are there, it's fine for them. Remember, whatever they do, they will prioritize on money first, not customer first. It sounds like I'm giving hate speech towards Astro, but it is the truth. Like it or not, we Malaysians just have to accept it.
Exclusive DTH license means, no other satellite pay TV is allowed to be in Malaysian pay TV market until the exclusive license expires. If our "very good" government wants to renew and extend their exclusive license again, then literally Malaysia no hope already. Whether to use C band or not, it still have to depend on our "very good" government allow the usage of C band for the particular DTH pay TV or not. But that one is future thing la...