One reason that the channels are bundled in theme packs is because it allows for much more value (eg. Entertainment 1 has 10 SD/6 HD channels), whereas those channels sold individually would be much more. Also, using theme packs likely is a main reason that the entry price for the Shaw Plan Personalizer is considerably lower than the older plans, and it is now even lower with the introduction of the new bundles.
For example, Basic Cable ($40.95) + High-Speed Internet 7.5 Mbps Download ($42.00) is $82.95/month. Then, with the introduction of the Shaw Plan Personalizer, you could get Personal TV and High-Speed Internet for $74.90/month. Now, with the new Simple bundles, you can get Personal TV and High Speed 10 (10 Mbps Download) for a regular price of $59.90/month.
That is a difference of $23.05/month, and you get a slight increase in your Internet speed. Personal TV and Basic TV do slightly differ, but the price difference is huge. Even though there are fewer channels, you also get a few 'Classic' channels (HGTV, History, Food) with Personal TV.
That is just using Basic + High Speed as an example. I'd definitely recommend checking out the new simple bundles, as they provide much more value than the regular Shaw Plan Personalizer had been offering.
I am a Shaw Employee. However, I am not posting on behalf of Shaw, and my posts are not official statements.